ICYMI: In honor of Twitter's 10th birthday, last night "Jimmy Kimmel Live!" presented a short list of the Ten Most Important Celebrity Tweets of All Time -- an inspiring, vigorously researched collection of celebrity wit and wisdom that Kimmel's team probably spent too much time working on (if they spent more than 10 minutes working on it). Justin Bieber, Gary Busey, Cher, 50 Cent, Kim Kardashian, Kourtney Kardashian, Jaden Smith, Kanye West and, of course, Donald Trump (twice) make the cut.

Simon Dumenco, aka Media Guy, is an Ad Age editor-at-large. You can follow him on Twitter @simondumenco.