If Ashley Tisdale's name doesn't ring a bell, then congratulations, you're not a 15 year-old girl. Tisdale, a former Disney star turned musician (isn't that always the case?), is one of the more active celebrities at the top of the Google Plus food chain, posting an average two times a day.

Unlike Britney, Tisdale's profile seems to be self-curated, which is good to see. But, if you're not interested in the comings and goings of a former "High School Musical" star, you may want to pass on the Ms. Tisdale.

Followers: 2.18 million