Women monopolize the top five; a Madonna streak continues; and, how impressive was Michael Jackson's 2009 chart resurgence?
Ask Billboard is updated every week. As always, submit your questions about Billboard charts, sales and airplay, as well as general music musings, to email@example.com. Please include your first and last name, as well as your city, state and country, if outside the U.S.
WHO RUNS THE HOT 100? GIRLS!
With the No. 1