Apple’s new iOS 5 operating system for its iPhone and iPad tablet was the apple of Twitter users’ eyes, accounting for 31 percent of Tweeted news links, while the most-watched news and politics video on YouTube was a local news program’s clip of Sarah Palin’s version of Paul Revere’s Midnight Ride, and the most shared news link by bloggers was a Los Angeles Times story about three federal judges in Atlanta suggesting that they might be ready to declare all or part of the health care law unconstitutional, according to the Pew Research Center’s Project for Excellence in Journalism’s New Media Index for the week of June 6-10.

No other topic came close to iOS 5 in the Twitterverse, as the second-most-Tweeted news link was video of a drunk man stumbling after leaving an awards show in London, at 6 percent, followed by: a CNET report supporting claims that use of electronics can be dangerous on airplanes, at 4 percent; the Weinergate fallout, with former Rep. Anthony Weiner (D-N.Y.) admitting that he sent inappropriate images to women, also at 4 percent; and a Wired piece about creating economic value out of a more creative use of natural resources, at 4 percent, as well.

Palin’s interpretation of Revere’s ride was followed on the list of most-viewed news and politics videos on YouTube by: a Rosario Central fan assaulting Barcelona soccer star Lionel Messi on the street in Rosario, Argentina; the June 1 installment of The Philip DeFranco Show; the June 2 edition of the same show; and another Palin-Revere clip.

The judges’ healthcare discussion accounted for 15 percent of news links shared by bloggers, followed by: a BBC story about Japanese tourists stressed out visiting Paris due to rude natives or high expectations, at 13 percent; a Los Angeles Times story about Los Angeles Police Chief Charlie Beck pushing for BB guns to be brightly colored to avoid being confused with real guns, at 9 percent; another Los Angeles Times offering about the lack of success in the war on drugs in Central America, at 6 percent; and also at 6 percent, yet one more item from the Los Angeles Times, on Republican presidential candidate Jon Huntsman skipping the Iowa caucuses.