I use face book only to keep in touch with freinds but I found myself having over 100 people in my list , half I dont even talk to ( got rid of them tho). So thats a downside to fb, but there is one thing that stresses my ass . Those god dam comunity posts , im sure no one cares if your eating cupcakes or your shitty attempt at writing poems. There is just way too much comunication and useless information. The worst part is that theres absolutley no shame when it comes to random pictures that can get you in alot of trouble. People dont realize that once you post a picture on the net , you can never get rid of it and can cause serious repercutions in the future.
All in all , social networks is good for comunication to a degree but theres just far too much personal information being spread. Once people start to realise this , they will stop paying for shit they dont need and stop embarasing them selfs.