As part of the continuing useless additions to the TSL Profiles service, every user now automatically gets a free blog when they sign up – this has been applied retroactively.
The format for URLs is yourname.tslblogs.com – for example, mine is at katharineberry.tslblogs.com (which is by and large a copy of this blog, thanks to WordPress’ import/export function). These blogs are running on WordPress, and carry over many of the features thereof (no plugin/theme installation for security reasons, however).
Logins are (well, should be) unified with TSL Profiles’ – logging into one logs you into the other, although logging out can be done independently. There is still much work to be done in terms of integrating the two, but I’m working on it. 
Also coming soon: Automated posting to Flickr from µBlog postcards (you can enable/disable Flickr already, but nothing happens when you do).
And no, I don’t expect anybody to actually use the thing. But there you go.
Great Idea Kath!