If you go into settings you can adjust who sees what.fb is a real eye opener, and at times hilarious!! My friends fall into 6 categories-
1, the addicts, those who are ( or seem to be) on there 24/7, commenting on and liking everything that everyone posts. Also posting about every aspect of their lives. Often found clogging up your news feed with total rubbish.
2, the boasters, mainly holidays, cars, where they have been or going
3, the attention seekers, always ill or going through some form of drama far worse than anyone else has ever experienced. Always far too much private info shared
4, the idiots, who try to write profound quotations to come across as quirky and weird, who in actual fact make themselves look like twats.
5 the twits, always using their twitter hashtags ( I don't understand twitter)
6 people like me, don't take it too seriously, use it to keep in touch with people or have a chuckle at the end of the day ( usually relating to one of the above!!)