Halfdone has compiled a list of the top 100 blogs based on visitor numbers from a number of sources

http://halfdone.wordpress.com/2009/07/01/june-halfdone-nz-blog-stats/

It is an interesting read as many of the top 30 I had not visited before, and blogs that I regularly visit were a lot lower than I expected.

For the record my blog came in a respectable 71st place. Also of interest was the allocation into left, right, centre etc, and then by topic, there are a lot of blog sites that are publically listed as christian.