Mars Hill has been publishing the B4L top ten blogs based on total number of recommendations, but that doesn't take into account the number of posts that a blog is producing. A better measure of the top blogs IMHO (it is just a mere coincidence that my blog jumps from 23rd to 10th under this measurement) is to take an average of recommendations per post.
Here is my top blogs (with Mars Hill's rating in brackets). It gives a totally different impression of the top blogs and makes much more sense in terms of the quality of blog writing rather than being skewed by the quantity of blog writing;
1 (1) Labour Humanists: 2.63 (mean recommendations per post)
2 (30) Dirty Leftie: 2.25
3 (42) Oxford Labour Party: 2.00
4 (11) Pootergeek: 1.77
5 (21) Antonia Bance: 1.75
6 (17) Some day I will treat you good: 1.7
7 (20) Let's Be Sensible:1.67
8 (28) Leighton Andrews: 1.66
9 (49) Ministry of Agitation and Propaganda: 1.66
10 (23) BrightonRegencyLabourParty: 1.63
11 (16) The Poor Mouth: 1.54
12 (17) Bloggers4Labour: 1.54
13 (11) Bob Piper: 1.53
14 (5) Ministry Of Truth: 1.39
15 (26) Luke's Blog: 1.38
16 (7) Skuds Sister's Brother: 1.32
17 (14) Mars Hill: 1.31
Others outside of the top spots:
(21) Baggage Reclaim: 1.27
(9) Harry's Place: 1.24
(4) wongablog: 1.23
(8) Jo's Journal: 1.17
(2) Kerron Cross: 1.16
(6) Take back the voice: 1.15
(11) Mike Ion: (missing info)
(10) Fourth Term: (missing info)
Joint Last, (3) normblog: 1.00 (among many)
Undisputed king of B4L blogs is Labour Humanists, no matter how it is measured. Notice how Normblog drops from third to joint last with the lowest possible score of 1.00! This average method has the merit of reducing the impact of those bloggers who boost their own vote by writing a huge number of posts and then voting for themselves (come on own up?), (or only have one admirer per post).
By the way, I was only counting posts that have received at least 1 recommendation, a more accurate top 20 would be to take into account all blog posts. If anyone has more time and interest than me...
*UPDATE* B4L has informed me that a few blogs (with lots of 2 vote posts) may have slipped through my calculations. So let me know if your blog has an average of over 1.5 per post. Next time I will also mention the number of posts that the average is worked out from.