I have a few questions regarding data feeds.
1. I have affiliates who are asking for them for their sites and I don't have a data feed.
2. I cannot prepare one myself. Is there a good company to use?
3. If I give this to my affiliates, it MUST be refreshed daily as my inventory is very dynamic and I don't want them selling items that are unavailable.
4. Google (former Froogle) displays my items on its searches. Yet when I access Google Base, they say I have no items uploaded via data feed. How did those items get there? (I run a Yahoo store).

I have asked the company who helped design (and maintain) my site as well as well as the company that runs my affiliate programs. People just refer me to links on how to create a data feed. That doesn't answer any of my questions.

Thanks for any clarification!

Does your web host do it for you. Usually the company that hosts your site will have tools for data feeds. if not then you will need to find a program that does.