Bee in bonnet. Must write this. But I have a horrible feeling that I will become one of but a few voices crying in the wilderness in a year or three...
Blog - n. A sequence of entries, usually formatted in reverse chronological order. Shortened form of weblog (although purists insist that it's derived from the implied definition in the phrase we blog).
Post - n. One entry in a blog. Usually has a permalink. AKA entry, blog entry, or blog post.
I'm increasingly seeing the use of "blog" to mean "blog post." Brothers and sisters, we must resist this corruption of our great and glorious language ;-)
See also Wikipedia.org.