What should you not do on Facebook?

[ijustrealized]

I know it's better not to post your private stuff like nude pics or love adventures, but I'm a little concerned about the personal info. I did not put my contact info on there, and I try to watch what pictures I post to my account, and I also blocked anyone I don't know from viewing my timeline... Can that be dangerous to show your work history or life events by year? Also, I am freaking out right now, after finding my deleted MySpace page still on the web! I wrote some blogs that were pretty naive, back in 2009, and I'm relieved there's no personal info of mine, but still this is messed up! I thought I deleted it forever, I guess not, and I did some research and found out millions of people have the same problem, maybe even worse and more regretful! so I filled out the thing to their admin to delete it permanently, but yeah, what else should you keep away from FB ?