Concerned about the whether casino software is truly random, and returning similar amounts as traditional land based casinos would?  You're not the only one.  The randomness or fairness of online casino software is a common concern among players and those considering playing online.  There is no doubt that there have been, and probably will always be certain casinos that run on software that doesn't produce random outcomes and cheats players.

But, to allay any of these concerns, many casinos now seek independent audits of their historical return to player rates to demonstrate that returns are as high, if not higher than land based casinos.

Until 2006 PriceWaterhouseCoopers were engaged by the below casinos to return to player rate audits.  Now online casino industry watchdog eCOGRA undertake the testing and provide audit reports.

Here are some audited returns for a bunch of well know casinos.  Unless otherwise stated, the return is for the month of February 2008.  You can view the actual audit reports prepared by eCOGRA by visiting the casinos.