I was poking around the Blogback site, seeing what Blogback Plus was, etc... and lookie what I found:

Advice: You should probably take this as advice when signing up to any system. Try not to use any pre-existing username / password combo (i.e. from Blogger or wherever) when signing up. A good password: (1) is not a word (2) is at least 8 characters in length (3) contains some numbers (4) is not the name of a character from Lord of the Rings.

*cue much snickering on my part*