I would also like to see a house like fairly on that list, since it's a reliable way to offer lay options in sportsbook betting. You should give it a try I think, so you can review it, if you haven't done it yet.
Finally you don't mention that directbet is the sponsor of the Tipster Championship, and that is a very good sportsbook promotion, that can be done at the same time as all their bonuses as long as people register for the competition. It's incredibly easy to earn 70mBTC by placing bets, and that value can get bigger if you finish in top7 prizes or do well in the side competition.
You have more info about it here, if you want to review it and add that information to your site:
Discussion thread (serves as support thread for the competition):
https://bitcointalksearch.org/topic/free-betting-competition-2000-in-prizes-sponsor-betkingio-discussion-thread-1256522
Registration thread (to register and review all rules and conditions):
https://bitcointalksearch.org/topic/xii-free-tipster-competition-sponsored-by-directbet-registration-thread-1248467
Thank you for your detailed reply, Fruegreads.
I am defiantly looking into that right away. The site is still in early days, and I am looking to update it with great sites when I come across them. The sportsbooks are really up to date, as these guys are the ones I have used and withdrawn from in the past without any issues at all. I really like the "exchange" sites, but I have never come across them before via Bitcoin. It is something I would love to hear about from you guys that have used the "peer to peer" exchanges, so I can try them out and add the best ones to the site.
Appreciate all the feedback - if anyone has any Bitcoin Gambling sites they would like me to review, pop me a PM.
Danny.