Leia em About.com:
Basics of RSS
By Trudy W. Schuett
In order to get the widest exposure [of your blog], pinging a variety of aggregators is right now the best way to go. You can do this easily and quickly at Dougal Campbell’s Blog Service Pinger. You enter your site’s URL and check the aggregators you want from several on the list. You need to do this each time you update if your blog doesn’t ping automatically. Note: Once you’ve clicked submit at the BSP, resist the impulse to click again if it doesn’t respond immediately. Another click sends another ping and you’ll end up with an error message…
Clique em Ping-O-Matic.