Wikipedia Definition of barter

IRS Rules about barter income

My favorite: craigslist

Barterfest.com

Barter at www.U-Exchange.com, the largest free barter site

If you have a great bartering site (seriously great, not a lame one with no offers on anything - oh wait, that's like this one. Never mind.  Any bartering site will do) send me an email or something and I might get around to adding it to this list.  There's a much better chance of that happening if the email is accompanied by a check.