Time-consuming:
Of all the Facebook disadvantages, I believe this is one of the major reasons why people deactivate or delete their Facebook profile. Being, one of the best way to know what your friends are up to, people spend too much time on this social networking site.
Facebook offers many entertainment applications and games which engage users to a great extent. Apart from that, Facebook chat and Facebook video chat are another two-time consuming feature.
If you want to use Facebook for your advantages, use it for specific time-limit in a day. Spending too much time on Facebook might make you a Facebook addict, and you might end up wasting too much time on Fb.