From 37 Signals:

How do you land that job you've always wanted? One approach: Write (well) about the company you want to work for and hope the people there notice. It worked for Chris Mohney who was hired to helm Gridskipper, a Gawker site, after launching a blog that discussed Gawker.

More here.

I imagine this is sort of a long shot, since general butt-kissing is not necessarily a means to get a job, and I'd think virtual butt-kissing is even sketchier. Moreover, how blah would the blogosphere be if everybody was just saying nice things about other people, trying to get jobs?