Not in public elections. STAR Voting was invented in 2014 using the accumulated knowledge of the good and bad points of previous voting systems in order to create something even better.
STAR Voting has been tested in small groups and computer simulations of various election scenarios and has performed very well. We've created a new web application at http://star.vote that lets you easily set up a STAR Voting election or vote in a bunch of existing polls. Check it out!
We see this as a pivotal moment for Oregon to pioneer a new path in voting reform, just as Oregon was a pioneer in adopting the initiative and referendum a hundred years ago, and more recently in nation-leading reforms like vote-by-mail and automatic voter registration.