Forum Moderators: skibum
One thing you can do is contact others promoting the program. Email them and ask them if they like working with the company/program, do they pay on time, etc. Ask about conversion initially, or wait til you get a bite and go further with it. You'd be surprised how many responses you can get, I usually get a 50% response rate on this type of contact. Nice way of networking, too.
I know you didn't ask, but if I may expand on part of your post:
>10,000 impressions
Affiliate advertising is inherently different from typical banner advertising. Slapping up a few banners and calling it a day doesn't really produce much. Your average 468x60 CPM banner advertising is not good for much more than branding, and you won't get much from affiliate programs treating them the same way.
The benefits of affiliate programs lie in being able to promote them yourself. Using text ads, you can write personal recommendations, reviews, and the like. This works wonders with conversion, you can promote products/services you believe in and are familiar with. You are wide open with making a presell.
If you don't want to go that far, just plain text ads written and placed cleverly can far outproduce typical banners.
Effective affiliate promotion is a different animal than banner broker CPMs. If you just want to stick with banners and working with CPM numbers, you are probably better off with the banner networks. Unless you can find a few very targeted affiliate programs.
The click thru rate from your site is almost entirely your responsibility. You can do quite allot to tweak your click thru rates. Is the ad incontext? Does it set nicely in the body copy flow? Does the page design lead the visitor naturally to your affiliate link? Does your link have an eye grabbing interest arousing headline, or offer a free bonus? etc..
Greektomi
A lot are 10% with 45 days which seems fine but sometimes it's a choice between a wider spread.
How do the product sites' listings relate to the choice based on the first factors? I've checked rankings and visibility in comparing - some may be #7 or second page of search results, while others may be top of the page with sponsored listings. So they have more visibility to people shopping. To what extent do their listings compete or help?
An affiliate program you can sleep on is one that has a pre-qualified backup.