(Sorry for stealing your subject "pattern", Bob)
I watched a japanese TV-show some weeks ago, where they interviewed a couple of japanese bloggers that converted their blogs into book-format.
It would be great, if someone like IBM could extract all the best tips/techniques/patterns/etc. from the N/D "blogosphere" into a Redbook (along with accompanying demo-dbs) yearly.
Maybe this would help motivating even more people to spread their knowledge through blogs.