Yahoo has released its 10 Most Popular Stars of 2007, and Emma Watson is number 3 on the list. The list is based on "actors and actresses Yahoo! users couldn't get enough of."

From Yahoo:
Emma Watson had her fans on the edge of their seats when it looked like she might not return for the last two Harry Potter films, but thankfully, she decided to stick with the series until graduation.

Dan Radcliffe managed to nab the 10th place on the list as well.
Daniel Radcliffe: A teenage Harry Potter got angry in this summer's The Order of the Phoenix, but it was news of his nude stage appearance in "Equus" that got Daniel Radcliffe the most attention this year.

Source: Yahoo