People are being lured(引诱) onto Facebook with the promise of a fun, free service without realizing they're paying for it by giving up large amounts of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.

    Most Facebook users don't realize this is happening. Even if they know what the company is up to, they still have no idea what they're paying for Facebook because people don't really know what their personal data is worth.

    The biggest problem, however, is that the company keeps changing the rules. Early on, you keep everything private. That was the great thing about Facebook—you could create your own little private network. Last year, the company changed its privacy rules so that many things—your city, your photo, your friends' names—were set, by default(默认) to be shared with everyone on the Internet.

    According to Facebook's vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don't share information, they have a “less satisfying experience”.

    Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they're online connecting with their friends?

    The privacy issue has already landed Facebook in hot water in Washington. In April, Senator(议员) Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set principles for social-networking sites. “I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them，” Schrage admits.

    I suspect that whatever Facebook has done so far to invade our privacy is only the beginning, which is why I'm considering deactivating (撤销) my account. Facebook is a handy site, but I'm upset by the idea that my information is in the hands of people I don't know. That's too high a price to pay.

    Sharon, Aged 22

    The most important thing to keep in mind when going into high school is to be yourself. Besides, I don't know what your middle school was like, but high school teachers will not care about things such as how much homework you already have in one night. It's best to just learn to deal with things and manage your time wisely so you can achieve everything you need to.

    Frank, Aged 21

    I think almost every kid feels both nervous and excited before their first day. You will probably love it. I know I did. You should join some sports or activities that will make your high school experience more enjoyable. Good luck!

    Eddie, Aged 20

    When I started high school I was really nervous too, especially since I had been homeschooled all through middle school and didn't really know anyone. I suppose the best advice would be to just relax. The first couple of days can be a little bit hard, but things will become easier before you know it.

    David, Aged 19

    I'm not going to lie. The first day is kind of frightening(令人恐惧的). But you'll get used to it. Don't be afraid of anyone; upperclassmen will pick on you more if you let them know you're afraid. Just take it easy. Making some friends and staying with them will greatly help you get used to high school quickly. After the first week it's really not bad at all. Don't worry.

    Maybe it has been the influence of the current scene: the type among urban biking. Apparently, urban biking requires entirely different bikes than suburban hiking does and therefore a Bike Design Project started where five design studios across five cities had to come up with a perfect urban bike. The winning bike will be manufactured for a limited run of 100 hikes and will be in stores next year. Industry, a Portland-based studio, came up with a very interesting bike: one that uses bluetooth and handlebars (车把手) that tell you when to stop or turn.

    Industry worked together with Ti Cycles to create a bike with a 3D printed titanium frame (钛框架). The hike is called Solid and can be connected to a smartphone APP: My Bike. This APP alarms a user when a light needs replacement and if something gets wrong with one's brakes. There is also software called Discover My City, which has a series of routes through Portland's most trendy neighborhoods, with suggestions about where to eat and shop.

    Nevertheless, the idea with cycling is that you need to focus on the road and not on your smartphone. This bike therefore uses integrated feedback on handlebars. Those handlebars tell a user when to turn, as they will buzz when a turn appears. As you are getting closer, they will buzz more frequently. And then there is the possibility to control your light via built-in sensors and change gears by pressing an electronic button.

    Although the bicycle looks highly interesting and can be seen as a piece of art for the designing world, we don't know if we would like our bike to have an automatic buzz when we are approaching a turn. On the other side, it could add some extra safety to traffic in general. Whether you like the bike or not, you have to admit the Portland-based studio brings the concept of urban biking to a whole new level.

    Last year, around Labor Day, I read a “Happy Ad” in our local newspaper. There was a lady in a local nursing home for the aged, who was celebrating her 90th birthday and her family wanted everyone to know about it. It said that if you wanted to drop her a line, here was her address. So I did. I found a birthday card and dropped her a short note, wishing her a happy birthday.

    A week or so later, someone knocked at my front door. I opened the door and found a middle-aged man standing on my doorstep. He introduced himself as the son of this woman to whom I had sent the card. He explained that he just wanted to drop by in person and thank me for sending such a nice card to his mom. Apparently, like many older folks, she did not receive much mail and was quite excited to receive mine. I just didn't know what to say. I told him it was my pleasure and that I hoped his mom had enjoyed her birthday.

    That year, I did not send out any Christmas cards, except to this lovely old lady in the nursing home. I just told her that I was thinking about her and hoped that she had a nice holiday. I sent her a holiday card and also a couple of notes in between. I just thought she might like to have someone write to her, to get some mails.

    She passed away a couple of months ago. I never met this lady, but I did keep her and her family in my thoughts. I dropped them a line of sympathy. I hope that my few little notes were enough to brighten a couple of her days here on earth.

    Wang Mengshu, an expert at the Chinese Academy of Engineering, said at a group discussion on the sidelines of the annual session of the National People's Congress that Wi-Fi should not be provided on high-speed trains, as it might disturb communication signals of trains and would also cost a lot in keeping trains in good condition. He also encouraged passengers to enjoy the views, instead of fixing their eyes on tiny screens of smart phones and laptops. However, on last Tuesday Beijing Youth Daily said it should be market demand that decides whether the Wi-Fi is offered on the trains or not.

    An increasing number of residents, especially young white-collar workers, are addicted to their smart phones rather than face-to-face interactions, thanks to the extensive Wi-Fi coverage across the country. That partly justifies Wang's opposition to the offering of Wi-Fi on high-speed trains, because they are not supposed to be dependent on high-tech devices. It is also evident that passengers on trains without free Wi-Fi will use their smart phones and other mobile devices less. However, whether the trains should provide a free Wi-Fi service fundamentally depends on customer demand.

    In other words, state-owned as it is, the China Railway Crop still has to obey relevant market rules, and provide technologically possible services to passengers if that is what they want. It cannot turn a blind eye to customers' wants "for the sake of their well-being".

    Free Wi-Fi, in fact, is already available on a lot of buses and coaches. This is a natural response to their competition with trains (especially high-speed ones), which are significantly faster and safer. The bus companies have been forced to improve their services to survive. It requires proper guidance, not a total ban on the bus, to make up for the negative effects of high-end technologies, such as people's increasing addiction to smart phones.

    When we do the same movements with our bodies over and over again, we overuse some muscles. And that overuse can lead to strain(紧张)and injury. Sometimes those problems can come from doing sports. But exercise experts say they are now seeing another cause for muscle problems: hand-held technology devices(设备).

    Staring down at your phone or tablet for long periods of time puts great tension on your neck and spine(脊椎). Many people who use tech devices also bend their shoulders forward. Experts say this posture(姿势)puts strain on the entire upper body. Muscle strain linked to hand-held technology has become such a common condition that it now has a name: tech neck.

    Kimberly Fielding, an exercise teacher in New York City, explains that constantly looking down at our devices creates an unnatural bend in our spine. This can cause nerve pain and other problems. “A lot of the curves of the neck can change, so instead of the neck spine going inward, the curve can be a little bit different and it causes nerve pain and disc herniation(椎间盘突出)and different muscle tension headaches — different things that really can reduce quality of life.”

    Fielding created a class to directly solve the problem of tech neck. The class uses different exercises to release tension in the upper body and strengthen back and neck muscles. Fielding says these exercises may feel uncomfortable in the beginning because the neck muscles may have become weak.

    However, you don't need to take a class like Fielding's. You can take simple steps to improve tech neck. For a quick fix, hold your phone at eye level. At the same time, take breaks from using your technology by standing up and stretching your legs often. Also, give your eyes a break by closing them throughout the day.