This subject was brought up here.. http://www.casinoaffiliateprograms.com/bb/showthread.php?t=5283
So at webmaster world they have pointed out the effects of what these sites can do to hurt our listings, pr ranking, etc … Go look at those directories, see if your site is listed.. If your site is, you will be most likely be effected.
These are machine generated pages and there is many of them.. The number keeps growing everyday.