One of the more interesting blog comment series I've read recently is the ongoing discussion about Lotus Notes over at Rod Boothby's Innovation Creators blog.
A couple of weeks ago Rod posted Lotus Notes - The Asbestos of Enterprise IT. In it he lambasted Lotus Notes' usability, among other things. This has led to some back and forth - and mudslinging - that when read in the right light tells us a lot about the advantages entrenched platforms have in large corporations when they compete with up-and-coming Web 2.0 "newcomers."