Mark is currently monitoring the following three ping services: Autopinger, Blogflux, and Ping-o-matic.
Why am I looking at these? because I use two of those services, Autopinger (I like the best) and BlogFlux (thought it was good!).
Anyway I think feeds and pings go together. And when (WHEN?) feedotopia is up, I will try t work with Autopinger to provide some services to Fedotopia.
Another reason is I like what Mark is doing. Just browse his projects and see if you like them too.