posting your own pictures on the internet is dangerous. The internet can be accessed by anyone, so therefore your personal information might leak out. Anyone can look and use your picture for any purposes.
但是,90后们也有些缺点.比如他们很少考虑他人的感受,过于以自我为中心.而且心理承受能力差.However, on the other hand, they have weak points, too. Some of them are over self-centred and rarely take others'