Does Ranked Choice Manipulate Voters?

http://www.nbcbayarea.com/blogs/prop-zero/Ranked-Choice-Voting-San-Francisco-Election-Mayor-132154758.html

The 2011 mayor's race in San Francisco will be the largest test yet of the ranked-choice voting process, yet the majority of voters don't understand how it works.

In San Franciso, 55 percent of voters polled in May had no clue as to how ranked voting works.

That's a problem, since ranked-choice voting by mail has begun in San Francisco for the mayoral race and several others. The election will end at the polls on November 8th.