Every year a committee publishes a list of words they think should be banned. This year the word "blog" made the list. I agree.
I have a big problem with the word. Even though I like them, and now have one myself, I find "blog" linguistically unappealing at best. It's not a word that rolls nicely off the tounge. It gets spit off. That's why I'm personally in favor of banning it.
That's not how language works though. In general, it is usage that dictates language, not vice versa. The original term weblog got contracted into 'blog, and that is what were stuck with.