That is unheard of, but I was searching the internet and found it.
Indiego is a website that is offering free advertising. The only thing you have to do in return is put a small line of text on your blog that advertises another crafters site. No big deal.
So here is the low down. Easy as 1, 2, 3.
1. you sign up (free)
2. add line of text on your blog (easy with step by step instructions)
3. add you advertisment to Indiego webpage!
Go check it out!