Has anyone tried doing product searches using web services from the various affiliate groups (CJ, LS, etc) ?

I wrote a test program that made a web service call to CJ.

I used the phrase "iphone case in blue" (without the quotes).

I got a bunch of totally unrelated results back.

What kind of experiences is everyone having out there? Any experience at all with product search?

Background: I have a site that lets you post your Christmas so your family can see it. If I put iPhone case in blue on my wish list, I'd like that description to be used in a web services call to CJ/LS/etc and I want relevant results to come back (that I can serve up as ads) so that my family can click on those links and buy the case for me.

Making sense?

Thanks for any feedback,