I had no idea about this before, but I guess that explains why it’s very hard to cross market sex and gaming.
I have to say though, I am going to disagree with Mike (sorry mate, no offence intended) and agree with Dom about the ratios. There are so many factors that can influence the ratios, and to give an average would not be accurate as there may be one or two affiliates who skew it either way. I would say if you have only just started, that your ratios look very good. I would expect that from someone who has been going for a year or two.
One example is if one affiliate had a site that was offering no deposit bonuses, and another affiliate had a site offering percentage match bonuses. I would expect that the ratio of registrations to deposits on the latter would be higher (ie more deposits per registration) because the people who landed on your site are looking for deposit bonuses, whereas the people who land on the site offering no deposit bonuses are mostly looking for free money and are not likely to deposit.
The other thing you will notice is that once you build a player base, the ratios will start to get smaller. In this case the negative balances carried forward for brands where you have large player bases wont affect you as much too, although I think it would be hard to find a program that actually carries over negatives these days.
I actually wrote an artical for iGaming Magazine a month or so ago about commission models (which I don’t believe has been published yet so keep your eye out for it) which explains the pros and cons of each commission model: CPA, RevShare, Tiered, Wager Model.. Might be worth keeping your eye out for that so you can see the general differences between each model since each one has different rules in regards to negatives and minimums etc.
For example on a CPA model it wont actually matter if your player wins because you are only paid once off for that player. Another example is that on the wager model because you’re paid on wagering, as long as the player is playing you keep getting paid and your commission doesn’t drop from a player win. 
Cheers
Renee
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