Sponsored conversations on yoru blog -- a good idea?

In a recent article written at Read Write Web, Marshall Kirkpatrick disagrees with a recent Forrester report that says it's a good thing to engage in conversations on blogs that are sponsored. He states that it isn't that much different from advertising, and that the new industry should not be overrun with this type of advertising yet. For more of his opinions, read the blog post here.

What do you think? Do you write a blog? Will you write about a topic on your blog if a company sponsors it?