If I recall correctly, it was here that I read before about the re-use of the term "blogosphere" and the lack of irony in that term's re-use.

I was having a discussion last night with someone who really should know better, who was insisting that (and I quote) "blog theory as a social phenomenon" was not what I would call "mental masturbation", and saying that the latter was a term she hated. These terms will be coined by people who want to mentally masturbate, without really understanding the irony behind their inception. Pity.