Thanks to
slashfairy A lot of folks have complained of being added by (usually Russian) journals that are either empty or that they don't know or have friends in common with. These accounts have been identified as BOTS. PLEASE DO NOT FRIEND THEM. Report them!
It is thought that they are likely being used for identity theft:
* One theory is that they are saving all your entries, and when people re-friend them, they save all their friends-only entries. Pictures, email addresses, names, street addresses, phone numbers - some people post these things, and the bots want them. 5000 bots friending 100,000 journals = identity theft.
If you've added any of these journals as friends, and then posted friends-only entries -- especially any friends-locked entries containing addresses and other RL information (such as for holiday cards, which I know many have done recently) -- you may be at risk!
The above quote was taken from the following link:
http://nympholept.livejournal.com/277106.html . Read that page for more information including how to report them.