The dnj site allready contains a huge amount of tutorials and other stuff, so what would be the use to start publishing articles in a blog ? I think a good reason would be feedback to check and improve the content. You can discuss a publication in the forums but it is hard to update an article already published. The dnj people are doing a great job in checking and formatting all submissions which make the dnj article library a coherent whole, but when it's published it is published. An article published in the author's weblog can be commented upon and can be updated by the author at any time. To try this I have published an article on my log, in the category Public beta on "Passing data in and out of web services using (typed) xml (-datasets)".  It is public beta which stands for please report any comments and please don't mind sloppy language.