I think this post made by the Twitter team pretty much sums up their woes. (http://dev.twitter.com/2008/05/twittering-about-architecture.html http://dev.twitter

I think this post made by the Twitter team pretty much sums up their woes. (http://dev.twitter.com/2008/05/twittering-about-architecture.html http://dev.twitter.com/2008/05/twittering-about-architecture...) "Twitter is, fundamentally, a messaging system. Twitter was not architected as a messaging system, however. For expediency's sake, Twitter was built with technologies and practices that are more appropriate to a content management system."