MTV.com News — Back-and-forth unleashes a celebrity Twitter pile-up, which included Ashlee Simpson-Wentz, Ryan Seacrest and John Mayer.By Gil Kaufman Mark Hoppus Photo: Roger Kisby/ Getty Images Celebrities: They're just like the rest of us — except wh... more info

The Newsroom — v5211, SAN PEDRO, CALIFORNIA - Friday, March 27, 2009. Singer John Mayer performs an acoustic set on the Carnival Spendor ship. John will be playing several times on the Mayercraft Carrier 2 trip which is a four day cruise to Cabo and back. John took... more info

Rolling Stone — • Megan Joy Flaps Her Wings, Leaves Idol • The New Issue: Lil Wayne Goes Rock • Springsteen Artifacts Hit Rock Hall: Video • John Mayer Breaks out New Songs on Cruise • Beck Reissuing One Foot in the Grave • Asher Roth’s Wild Spring Bre... more info

Rolling Stone — “I feel like the kid in that YouTube video coming back from the dentist,” John Mayer joked midway through his second headlining show aboard the Mayercraft Cruise Carrier 2, referring to the stoned viral-video sensation. “You know at one point o... more info

Idolator — The second installment of John Mayer's cruise, the Mayercraft Carrier 2, returned to shore yesterday, and with its return came YouTube footage of a brand-new song by Mayer called "Heartbreak Warfare," a slightly long, but overall not that bad lament ... more info

Pop Crunch — It’s not enough that John Mayer has had half the women in Hollywood, so the rock star is now setting his sights on the men. After more than a year of shouting ‘No Comment” to questions about a rumored same-sex spit swap with Perez Hilton, John�... more info

Perez Hilton — This is NOT an April Fool's joke. You must watch the video above!!!!!!!!!!! You must watch the video above!!!!!!!!!!! You must watch the video above!!!!!!!!!!! You must watch the video above!!!!!!!!!!! You must watch the video above!!!!!!!!!!! You mu... more info

PopSugar — John Mayer held a teacup while he answered a few questions aboard his Mayercraft Carrier somewhere between California and Mexico yesterday. John's trip will come to an end today, but he's been doing his best to make lots of memorable moments over the... more info

PopSugar — John Mayer took the opportunity to debut some new music on the Mayercraft Carrier this weekend. He's been hard at work on his album and debuted a song called "Heartbreak Warfare," which of course has people wondering if it's about recent ex Jennifer... more info

PopSugar — John Mayer changed out of his short shorts but kept the performances coming all weekend on the Mayercraft Carrier. He also took the time to sniff an audience member's green swimsuit - though thankfully he stayed away from the Borat look this time. On... more info