Don't know if this is considered a gambling site but it's in the title so. http:// www. electronicsview.com/find/Games/Gambling/Slots/
It's ODP data... you would have to consider DMOZ and Google Directory as a gambling site then too. If there is a gambling related ad pointing to that page, that's a different story though.
DMOZ data with 'Online casino secrets' , 'Cheat slot machines', etc google ads. Nothing to worry about. Martin