I am a blogger and I routinely negotiate advertisements for my fellow bloggers. Sometimes I do it and don't get any payment and other times I get a finder's fee or something.
Most of the time, the advertisers send me all the money and I give it out to the 3 or 4 bloggers that are involved in that campaign. They pay by paypal.
Do I have to pay taxes on the money that hits my paypal account, regardless if I keep any of it (or if it's intended for me)?
On a similar note, if someone gave me cash to hand to someone else, would I have to pay taxes on that? I think not.