For some time now, Technorati has been a bit of a byword among blog ranking services: slow, erratic, past its best etc., with the only possible advantage being that it shows who's linked to your blog in the last 90 days or so (contrast with Alexa, which purports to show 'links in' but may as well show the recipe for Crab and Toenail soup for all the accuracy this has).
(Update: judging by the comments, the days of being a byword are far from over!)
In October '09, they did a big reorganisation: gone went the old 'authority' (= the total number of sites linking to you in the last 90 days), there's now a new ranking out of 1000, a bit like the cricket international player stats, based on number and relevance of links in.
Even cuter, you get a different 'authority' within any subcategories your blog falls into. I'm enjoying the moment of being in the top 35 'Religion' blogs, which probably won't last, as they continue to update the lists and include more of the many blogs which really should be in this category but haven't found their way there yet.
For the record, the current top 10*, which will certainly broaden my reading, is:
1. What does the prayer really say? Catholic priest, prolific - does he do this full time?
2. Tim Challies
3. Jesus Creed (Scot McKnight at Beliefnet)
4. Catholic Exchange which looks more like an online magazine than a blog, but plenty there.
5. Albert Mohler
6. The Catholic Key which has a fascinating post on the RC proposal to admit disaffected Anglicans. The gap between Rome's "Here is what you requested" and Anglicanism's "Is this what I was asking for?" is huge. The gap is between Rome's offer of an Anglican expression of Catholicism and Anglicanism's hope for a Catholic blessing of Anglicanism.
7. The Resurgence looks to be lots of good stuff there.
8. Against Heresies the spirit of Irenaeus (it was him, wasn't it?) lives on in Martin Downes blog. Lots of theology.
9. Pyromaniacs espresso evangelicalism. No, make that Turkish. Love the graphics.
All US and Catholic blogs, as far as I can tell. I imagine there may be a lot of flux as things settle down.
*the listing seems to be quite dynamic - I drafted this on Sunday evening, and by Monday morning it had changed, so the top 10 might be quite different once you read this!