Great Rant.....

.....that I totally agree with. Now imagine that photographers didn't just give it away.

"If you sell yourself cheap......

....you will never get out of that hole".
Great American Society of Media Photographers interview video with several members on negotiating with clients. And there's tons of other information and advice there too.
Also don't forget Copyright for Clients from the AOP.
Oh how I love laying it out upfront.