This year began with a historic turning point -- January's inauguration of our first African-American president -- and was filled with many other memorable events. Listing the most important front-page news of the past 12 months is a December media tradition that's now updated with an interactive twist. For the first time since the Associated Press news service began a top stories poll in 1936, 1,400 members of the public had a say via a Facebook application.
Editors and broadcast news directors put President Obama's inauguration first, followed by U.S. economic news -- while the public poll reversed that order. Both AP Top 10 lists have eight stories in common, including Michael Jackson's death (No. 3 among Facebook voters; seventh on the professional journalists' list).

Some newspapers also invited reader participation through online polls. At Slate, a news and commentary site owned by the Washington Post, more than 23,000 readers voted for five top stores. The leading picks are the inauguration, health care reform, economic recovery, the Afghan war expansion and election protests in Iran.
Prominent choices on other lists also include Michael Jackson, the Iraq war, an airliner's safe river landing in New York, the H1N1 flu virus, Tiger Woods' personal embarrassments, General Motors' bankruptcy filing, a shooting rampage at Fort Hood in Texas and the Tea Party conservative movement.

On Twitter, Iran's election backlash was the year's most engaging topic, according to a review of posting trends at the micro-messaging site. Twitter actually became part of the story when Iranian students used it to describe harsh government crackdowns on protesters during a news media blackout.

Editor says: "This move to expand the AP Top Stories poll is among several efforts to engage consumers in new ways through emerging platforms." -- Michael Oreskes, AP senior managing editor

YouTube's list: "For the first time we're sharing our official Most Watched lists and some of the fastest-rising search terms on YouTube. Some moments were big (President Obama's inauguration), some small (a Minnesota wedding party erupts into dance), some expected ("New Moon"), some surprising (amateur British singer Susan Boyle) -- but all of them inspired, entertained and connected millions of people around the world." -- Jamie Davidson, YouTube manager