Ultimate Rally - afaik there where some poeple on forums that paid a significant entry fee and didnt get it back
letsbuyit.com - clearly illegal, insider trading and he got a prison sentence + 100k fine
Bin Laden bounty - true, but it still was smelly
Liga.net - it was a Quake2 Duel League back in 98/99 (if i remember correctly). Kimble was known for playing lots of Quake back in the day, he invited the most promiment players, first prize was some super High end PC (of the time) and money but the winner never got it and was kicked out of the league, which was shutdown soon after that : http://planetquake.gamespy.com/fullstory.php?id=61507
Its just a fact that you should not trust this guy given his history. Sure people change, but be cautios!
more info:
http://www.theregister.co.uk/2004/09/30/kimble_rally/
http://kotaku.com/5878337/arrested-megaupload-boss-cheated-h...
Ultimate Rally - never got past the planning stage, who did he take money from?
letsbuyit.com - He said he was going to invest and then didn't. He never promised money to the people that lost it here, they were just speculators. Yes it was illegal, but he didn't breach any agreements. (Actually might not have been illegal at the time)
bin Laden bounty - nobody gave him information leading to finding bin laden so there is no bounty, I don't see the problem here
Trendax - well that's clearly a scam but I can't find if people actually invested there
Liga.net - please tell me I missed something and you didn't put this on the list for cheating in a video game