Corporates in the blogosphere

What do you think about companies that have blogs? I think it's pretty cool, becuase it's a live way of interacting with them, but I know that a lot of people reckon it's a bad thing for a company to start a blog because it's like advertising.

I pitched the idea of a blog to a company we're working with, and they bit, so I had to start the bloody thing and load up tons of content all in one day. Coupled with the five meetings I had from 9 to 4 yesterday, it's made for a trying two days. But it's all done, and I think the blog is cool. Of course, I can't tell you what it is, but if any of you know how to get people to read corporate blogs, let me know!