Re: Facebook is Haraaaaaaaaaaaaaam!!!
As many have all ready stated, the whole debate centres around the fact how you use Facebook or any other networking site.
Intention (niyaah/niyaat) is one of the most fundamental aspects of our religion. Having a clean heart and having good intentions is what is encouraged in our religion. If your intention behind going on a networking site is to do ‘bad’ things (again what is ‘bad’ is relative but I would categorise things like openly flirting/flaunting oneself or using it to cause harm to others as ‘bad’ with regards to such sites) then yes it could be deemed that it is haram. However, if you are aware of your actions and how to conduct yourself even online, then there is no haraam in it, i.e. by restricting profiles, conversing only with family and close friends etc and not adding random people etc.
Sometimes we forget that Allah (subhanatallah) is omniscient and omnipresent, therefore our behaviour, regardless of our situation, will always be watching over us.
Before pointing fingers at one other and acting holier-than-thou, we should keep ourselves in check. As Baba Ali says, the ‘haram police’ 
These are those people who are the first to point fingers but have no proper justifications or do so without realising one’s own actions.