aff

[Mark A. Mandel]

what is the meaning of this abbreviation, which I keep seeing on the Web?
This set of ads is verbatim:

Ads by Goooooogle
Peanuts Brown for Sale.
New & used Peanuts Brown. aff Check out the deals now! <-----
www.ebay.com
Cat Comics for cat owners
Check out my daily comics Why not laugh a little today
Mows.com
Search for Peanuts Gang
Snoopy at eBay Millions of items daily. Aff <-----
www.ebay.com
Free Cartoons Here
Download and watch Free Cartoons All the cartoons you'll ever need!
Freeze.com

-- Mark
[This text prepared with Dragon NaturallySpeaking.]