Here’s an interesting development–Microsoft has purchased Visio, the makers of the diagramming tool that of the same name. I honestly think Microsoft can make Visio a lot better, it’s one of the worst applications I’ve ever used. But more interesting to me is the fact that Visio’s CEO has defended Microsoft on any number of occasions when people charged them with being monopolists. It will be interesting if Microsoft will use their purchase of Visio to launch an attack on Rational Software, one of their other staunch defenders.