For the multi-blog sub-domain documentation it might be very helpful for somebody setting up a multi-blog environment to know that it is also possible to add the sub-domain at the end of the path!
Standard in docu:
Also possible (missing documentation):
This is the solution when you don't have the sub-domain wildcard in your web server configuration like in many shared hosting environments. I made this experience and implemented that 'solution' when installing LifeType on 1und1.de.
As always just my 2c ...