all of godaddy's expired domains go to TDNAM before backorders go through, i don't know exactly the date that they start there but they seem to hit the "fire sale" for $5 38 days after they expire. They get released by godaddy on day 42 and then get picked up by backorders or other registrars. I have had mixed success with backorders. I took over an old buisness partners account and he had about a dozen backorder credits in it. I have been reapplying those credits to different domains for the last few weeks. I only have one left but it will be gone soon. it seems like snapnames does a better job at grabbing domains then the godaddy system, but if they dont sell the domain in auction they tend to drop it back to the registry and the back order will try to catch it there. I have gotten a few decent domains with this, but this was just using credits that didn't cost anything to me. I would not bank on a backorder if it is something that you really want to develop, for me it is like playing nickel slots in Vegas, doesn't hurt to lose but i get something to brag about if i catch it.