It is perfectly normal in the Ask Me Anything forum. If stars don't want to be asked anything, they can do conventional interviews elsewhere.

AMA does not exist to plug things. It is a forum where people (usually not stars, but rather people with unusual jobs or interesting jobs, experiences, etc.) go and promise to answer any question. If the stars don't want to be asked anything, they have a million other places to go to hawk their wares. Asking the…