Interesting. Typically I try not to blog about blogging, but I'm interested in this idea of clustering bloggers (could you call our little cluster the Reformed Wing?) and what he calls "the catacombs." (Perhaps that would be a good name for Dani's prayer site). And as Gideon Strauss points out Martin Roth's directory is very limited. It only has 6 links in common with mine (who AFAIK are almost all Christians) and I know of a great many more Christian blogs that I don't read even close to regularly.