One thing I cant stand seeing on Rentacoder is when you post a project, freelancers simply place a comment (or even a bid) where they simply rattle off:

We are X certified company
and have skill A, B, C, D, E, F, G blah blah blah
We will do a very good job
Look at our profile ........ for examples of our work.

Aaaaaarrrrrrrggggggggggghhhhhhhh!!!!!!!!!!!

They didn't even read my project. They just cut and pasted their standard response they place on any programming job.

Everytime I post on Rentacoder, I can guarantee I'll get at least half a dozen "spam bids/comments"

I wish Rentacoder would tighten their rules.