Does anybody have experience doing barter deals?

I'm interested in brokering barter deals. I'm not interested in running a barter exchange...yet! For now, just doing one deal and then moving on to the next.

Questions: Who is responsible for reporting these deals to IRS (both sides on their own or the broker)?

What type of "deal paperwork" is required?

What's a scrip?

Is anybody here willing to share a few things about their barter experience that might be enlightening?

Thank you.

Marc