is there anything that can be done about ranking cheats, the people who have access to two computers and manage to set up second users to boost their ranking, there is one in the top 5 of 8 ball uk now, who had ther scores on another user reset a while ago because of the same thing, maybe i should be reporting this to a mod but there is none around at the moment.

They're caught almost all the time. We have moderators for precisely that reason.

If you suspect someone of cheating inform a moderator and they'll happily look into it!