I went back for a look at a post I made a few days ago (Skylines) and to my surprise found a Google ad at the bottom. I assume it's still there. I am anything but a big-time operation -- normally less than a half-dozen views per day per blog.
According to the WordPress site information, I gather one might expect an ad being thrown in, but I also gather it's done where the following is in the thousands.
Thanks for any explanations.