That is a correct assumption on the comment about receiving bans from multiple sites for cheating on a single 1. We dont share information publicly but sometimes staff from one site may be staff from other sites or friends with staff from other sites and pass the ban along hehehe.
As far as cheating on sites. Its easy to cheat but its easeir to get caught... While your cheats may work for a while chances are more than likely you will be caught. Its not worth cheating. Your better off using a site where you get bonus points for seeding or where as long as you seed a certain amount of time reguardless of amounts sent they wont warn/ban you. On my site we do check to see how long your average seed time is. So if we see you at least making an effort to seed many times you wont be banned.