Rate Exchange!

So, I've come up with this idea about a rate exchange thread...
Well, I haven't worked out all the flaws yet, but the basic idea is that one user offers a rate on another users track in exchange for a rate by the other user on one of his tracks.

For instance:
1: I would like to get a rate on my ....... coaster! Any takers?
2: Sure, I will rate it, in exchange for a rate on my ,,,,,,,, coaster.
1: Deal!

What would be the benefit in doing this, you ask?
Well, users would get motivation for rating, since they would get something - a rate - in return!

What are your thoughts?

I like it. This really seems like a good idea, except for those who rate tracks far more often than they upload...though I guess that even so, this is just another place to advertise your ride. I think this is a great idea. Maybe someone can monitor this thread and the rates that actually happen so people don't back out?