For:
Adsense?
YPN?
Google Affiliate Network?
CJ?
Clickbank?
Chitika E-Mini Malls?
Adbrite?
Kanoodle?
Zlio?
Kontera?
Intellitxt?
Ebay Affiliate Store?
Amazon Affiliate Store?
Microsoft contextual advertising?
ContextCash?
Searchfeed?
Tell me about the ones you know for sure. Thanks.
If they legitimately file their taxes, then they should have made you fill out a Form W-9 before you enrolled in their program.
Adsense, CJ, and Amazon definitely do, not sure about the rest.
If you have a Google Adsense account, you can access that information here: https://www.google.com/adsense/account-tax