UnderThePump, you've made my night! I'm jumping in again only because of you.
Are you levelling or indeed oblivious? Allowing people to multiacc makes it harder to prevent collusion ldo. As for screwing HUD stats, there have been many solutions: banning HUDs (Cake in the past, Bovada, many other networks too small to be supported by HEM/PT), permission to change screennames (Cake until June 1, Party who were experiencing a
glitch allowing to change hole cards due to that
), anonymous tables (Bovada and Party that
got unmasked, Microgaming).
Anon tables are bad because they're antisocial, read
'What Bodog and Other Operators Must Learn From 888’s Success'. They and screenname changes make collusion much easier, that's why e.g. Lock stopped this practice upon taking over Cake.
Also, post such questions in our small stakes forum please - you'll get more responses.