This probably seems like an odd question, but who was your first sponsor? It was something I was thinking about last night as I clicked through my old sponsor list to see which ones are still around. Traffic Cash Gold was my first one, or at least the first big, well-established one. It looks like it must have been sold at one point, but is now with the original owner again.
I logged in for giggles, and everything is pretty, but they don't have any hosted galleries listed. So odd.
Anyway, which sponsor broke your cherry and do they still exist? If so, do you still promote them?