I'll keep the P&E (Preditors & Editors) section updated.
The Black Hole, for example, tracks paying markets. I added the Absolute Write watercooler too. These are forum-sites that you want to use for your own sake. Trust me.
Whenever you submit, make sure you've looked at the market. Check Ralan, check Absolute Write, check HiPiers, etc. Ask around. Look at your favorite author blogs. Research!
Because you don't want your work to fall into a black hole.