Are you in therapy or suffer from low self esteem? Maybe you make these accounts, post something, regret what you said and delete? Just a wild guess! I've deactivated my fb a few times after going on some drunken/manic rant. But not often. I do go back and delete my posts a lot though. I can say some stupid stuff while I'm manic and read it the next day feeling so stupid. Learn some self acceptance even if it means seeking therapy to do so. What I learned to do is think twice, three times before posting.