Live Journal has been doing some research.
Dave Winer started the idea, and it is a well known blog platform among other things.

Interesting. The Pereus Study concluded that the majority of bloggers were teen age girls.

Male: 456937 (36.5%)
Female: 794752 (63.5%)
Unspecified: 322294

The geographical demographics are very similar to the god-blogs, with the UK edging Australia.

United States - 1078997
Canada - 72585
United Kingdom - 59584
Australia - 29295
Russian Federation - 27442
Germany - 7342
Singapore - 6585
Japan - 4724
New Zealand (Aotearoa) - 4636
Netherlands - 3996
Philippines - 2932
Ukraine - 2603
Israel - 2511
Sweden - 2455
Ireland - 2243

The age distribution is very different also but inline with Perseus.

link via Jordon Cooper

And mentioning Jordon, he has a suggestion on a way to ‘drive traffic to your blog.’
The Ooze has a blog directory with :

no doctrinal statement or rules or dogmas that have to be adhered to (although you probably have to a little oozey…

and no spam.:^)