Damien François, a PhD student at UCL, has a very interesting blog related to data mining. Topics concern artificial intelligence and machine learning. Posts are short and clear. Two nice parts in his blog are the interesting read and the press review sections. It regroups respectively general readings about machine learning or artificial intelligence and links to recent news related to computers and their ability to learn. To my knowledge, it is not possible to comment a post. Very nice blog to stay up to date on recent advances in AI topics.