It looks like my former employer, Quovix (a great place to work, BTW) decided that they’d try something new and look for applicants by posting a blog entry.
I think the idea is great, especially if the people that read your blog are the same group that you want to hire. Of course, this might not be for everyone — I can imagine whole sectors out there that don’t have people that tend to be into blogging — or even Web surfing, for that matter.