Have you had a good experience with CJ and eBay? I own / run several gaming related sites and though about displaying video games on eBay or something like that on the site. Can you pick the category of games? i.e. xbox 360 or playstation 3 etc? Also, if someone is already using them for videogames, do you earn a lot of money?
You can link to any Ebay page you want and make money if your user win a auction within 7 days. You can make a lot of money if your websites have a lof of visitors everyday.
what is the best way of referring ebay? e.g. you looks for an attractive product and link to a specific auction/item, or link to a category?
I've had some small amount of success linking to specific auctions/items, not much with categories or Editor Kits. But it is a bit of time sink finding specific items that fit well with my site's content. And they come and go so earnings aren't very steady or big for me.