Dudes with "contact me for recording/mixing/mastering" in their sig...

I think it's more about keeping your name present and giving people a very easy avenue to get in touch with you via. I couldn't say how many of the requests that come through my website were from my sig link specifically, but I do know that the vast majority of my work as come from this forum.
 
Right on. Im still working on doing things good enough to put myself out there like that haha. Soon though! I actually like editing guitars/bass/vocals. As far as drums go I've only been able to work with midi drums, but I like editing those too.