My first rule of discussing Weebly, is to make sure you understand that its still very much in development. As a result I'm going to focus much more on what DOES work than what doesn't work. The reason for that is that these blog posts stay around forever, but Weebly is going to be improving and adding more functioonality.
The eBay Affiliate Program can be a big moneymaker. Personally, I have never done that well with it, but most of my commercial activity is concentrated on people who already have eBay accounts, at least that's been my excuse and thats where the real money is made, signing up new eBay accounts. The good thing about eBay is that you can target almost any niche with relelvant eBay auctions, and eBay has really improved its ability to target a keyword or a niche with their new eBay To Go System,
To Use Ebay To Go you have to jump through 2 little hoops.
I guess I'm a little slow because I find eBay's affiliate program very confusing. They use CJ to manage it but all the Good Stuff is on eBay itself, including eBay To Go
You will need to know your ebay PID (which you can find in CJ (check in Account -> Website Settings but you can make nifty ads like this!