Weblog ping services

Given the sheer number of weblogs that exist, and more importantly the number of those that could be dead, knowing which weblogs have been updated and when is a critical piece of information. The solution to this problem is a notification service, whereby weblogs alert a system when they’ve been changed. Pioneered by weblogs.com, ping services are the linchpin of every major weblog aggregator.
overstated: Weblog ping services