Blogs and Firefox -- this is cool

When I type various first names directly into my Firefox brower (into the spot the URL would normally go), I am directed straight to the relevant blogs. Cool.

Typing michelle yields michellemalkin.com; glenn yields Instapundit; hugh yields hughhewitt.com; corner yields corner.nationalreview.com; and yes, david m yields davidm.blogspot.com.

Betsy and Andrew don't get to the relevant blogs, though. And it doesn't seem to work at all on Internet Explorer.

I suspect Firefox is directing me to the first Google hit for the item. Or does Firefox somehow know what blogs I visit?