It seems to be some sort of data-mining operation, gathering statistics about LJ users and selling them. It has no connection with Live Journal. The support discussion is here, but is apparently secured in some way, so I'll summarize it here:
(reply from LJ privacy team:) The site located at http://ljmaps.robobeasts.com/ has no affiliation of any kind with LiveJournal, and should not be treated as a trusted site. Administrators have been made aware of the site, and may take any action they see appropriate.