There are none....
I read something over the weekend in regards to affiliates and sponsors of blogs. There was a chirp out there that stated that one should be honest and disclose if they are receiving "kickbacks" from manufacturers for product reviews, opinions, etc.
It occurred to me that I have opinions of certain products that I use and I freely post those opinions in my blog. Mizunos, Trek, Nike, Trader Joe's, blah, blah, blah. But that's all it is: my opinions and what works for me. I don't receive a penny for any link you click on in my posts. Zilch.
What I do get is the wonderful satisfaction that somewhere out there, someone is reading my words, my opinions, my silly humor and they are free enough to share their opinions, their humor and words. Every reply is my payment. And that to me is absolutely priceless.