Just to put your mind at ease, I've had two possible roommates come up lately. Rod and Adam, both of whom I've known for years...
Sorry I missed this post. I haven't been reading much, LJ is being a pain and not letting me read my flist.
Also your friends can read your unlocked entries if they do a usersearch, but if they want to comment you need to allow for anonymous posting because they can't leave a comment w/out that if they don't have an acct.
Good luck!