TaxProf Blog has a 6.4 "Blog Juice Rating," determined by:

• Number of Bloglines subscribers (40%)
• Alexa rank (15%)
• Technorati ranking (30%)
• Number of inbound links via Technorati (15%)

Here are the Blog Juice Ratings for various law professor blogs:

Update #1:  Steve Bainbridge notes that his blog should have a juice rating of 6.8, not the 0.8 I reported in the chart above.  My 0.8 came from the url http://professorbainbridge.typepad.com; Steve is right that the correct figure is 6.8 if you delete "typepad" from the url.  My apologies.

Update #2:  To make clear:  I did not purport to do a systematic "Juice Ranking" of all law professor blogs.  The post explicitly says that it is a ranking of "various law professor blogs."  These are blogs I visit regularly.  In addition, as Steve pointed out, there is a generic problem in the Juice Rankings because they depend on the url used and do not aggregate various alternative urls for some blogs.