Exploring the world of ping servers

Now that I have an archive of 6 weeks of posts I'm ready to start actively attracting new readers. My next step will be to add ping servers to this blog's code. I know in general that ping servers accept blog updates through some API, but I haven't ever worked with one. I think I'll try building a solid list of ping server links at Del.icio.us and then report bck on what I find. You can watch this list as I search.