The IMDb has its new Starmeter rankings
out. They rate actors by how often people look them up.
A few factors skew the rankings. Kids have more time to look up stuff, which put TWILIGHT's Robert Pattinson and Kristen Stewart at #1 and #2, not to mention a bunch of other secondary characters in the top #25. I'm pretty sure Ashley Greene isn't actually a bigger star than Leo DiCaprio.
Also, people look up actors when they have no idea who they are. Which might account for Tom Cruise's relatively low ranking (#18). Way more people go to see his movies, but who needs more information about him?
In other words, this is a distracting and misleading metric. Ah, well. You get what you pay for.