A couple of months ago a WCMS sales guy said to me that when hears the words "we are looking for blogs, wikis, etc." from a customer it is a clear indication that the customer really doesn't know what he is talking about or (at least) doesn't have a clear vision of goals for Web 2.0.
I too am suspicious (and a little surprised) when I hear these terms together because, other than the fact that they are relatively new to the "enterprise," blogs...