The lightness and ephemerality of Twitter is such that it feels less an application and more like part of our daily fabric. For a while this morning I thought I must have an internet connection problem but after an hour without Twitter I Googled and discovered that Twitter is indeed offline. In fact, according to the Twitter Status Blog, the microblogging service is defending against a malicious denial-of-service attack. Here’s hoping the opposing forces are soon successful in restoring order to our online world.