IMO, facebook has been more positive than negative.
If you participate in online forums, like we all do here, then you are not really far away from deriving benefit from facebook.
Now, as far as facebook becoming a public company, I could never understand what its economic model was all about. Same thing with twitter (not a user myself). Everybody always talks about ad revenue, but for my part, I've never even clicked on an online ad.
While there are always many methods of personal communication, look at the trends....phone calls gave way to emails & texting; have those given way to twitter? What's next??
