The reason for promoting internet casinos can be summarized by the fact that it's financially rewarding. It's rare to find an industry that can compensate affiliates so well. A recruited player could potentially earn you thousands (these players are known as whales) 

Online gamblers are recognized as having above average incomes. The average player value is $200 - 300. Where else can you earn $300 per lead? The payouts are high, but so is the competition.

In a recent turn of events the ability to advertise has been significantly reduced, with Overture and Google pulling the plug on any gambling related advertising. This makes it that much more difficult to enter this market, but at the same time evens out the playing field. It's no longer possible for a casino or webmaster to buy his way to the top of search engines.

What makes one affiliate successful and not the next? The successful affiliates place themselves in the shoes of a potential player. 

Assuming you were respected and well educated where would you choose to gamble? This is what you have to consider. A safe assumption is you would seek out information concerning casino gambling, from a reputable establishment that reviews casinos.

Your portal needs to be authoritative, we feel we accomplished this well with one of our websites www.casinoranking.com the website receives similar traffic to some less successful portals but converts like crazy. 

To be authoritative, you require to communicate clearly, represent quality establishments, and have a name that symbolizes quality. You cant have an immature sounding name, nor can you have substandard content. We believe this to be a common mistake of which can be easily avoided. Discard of domain names that have words such as cool, dudes, and go for the gold.