Weblogs.com Ping Cacher. I have seen this issue raised before. It sounds obvious to me that this kind of centralized architecture for Weblog update notification is fundamentally not scalable. I believe that Weblogging is at heart a Peer-to-Peer application: Pingback and Trackback are ad-hoc workarounds to build a more-or-less P2P architecture over HTTP. These notifications should be sent via a P2P cloud so as to be independant from any central service. All Weblogs should be Peers within a P2P network, both client and server, and used for both publishing and reading, replacing the current ad-hoc, RSS-based aggregation technology, which is also very wasteful.