As we all are using facebook we had faced many problem in facebook, some of them get solved and some of them don't. Its true that facebook in so advanced that it has got everything on it starting from forums to own pages many more. I have found a major draw back of facebook that you can't see a profile page of a user without logging in. But this type of problem is not there for Myspace and twitter. If you have noticed there you can view others profle page. If you have come across any other such problems share here. This will help us.
My issue with Facebook has always been how they handle advertising. I won't go through the history of it, but currently, when advertising internal and external websites through Facebook, internal link creatives are shown more often than those with external. This keeps the traffic within Facebook, to continue to make more money for Facebook. It is impossible to get a true split test and not an honest way to run an advertising program.
IMHO, it is very AOLish from 10+ years ago. It is a short term benefit with long term consequences. It will stagnate Facebook over time. People will be less likely to advertise internally and Facebook users will grow tired of... well, Facebook. The internet is based on the simple notion of giving and receiving. If Facebook only takes, soon they will no longer receive. If Facebook wants to break the 10 year hurdle that web companies its size face, it is going to have to open up and give some of that money to publishers.