Really liked this person's testimony of John Mayer:
... I must admit that I'm another John Mayer convert. Back when I was in high school, I was convinced that I would contract a venereal disease if I ever had to hear "Your Body is a Wonderland" one more god damned time. Flash forward to my early college years when I saw Mr. Mayer do that funny little bit on "Chappelle's Show" about how white people gravitate toward music with electric guitars. As he laid some licks down for the sketch, I thought to myself: "Wow. This guy actually has chops." A few weeks ago, I decided to give him a chance by listening to this album through my school's intranet, in which we can share iTunes playlists. I was floored. He's undergone a great metamorphosis. He's got blues sensibility akin to Eric Clapton (whom he acknowledges in the liner notes) and he's retained genuinely good songwriting capabilities as well. The lyrics on "Belief" and "Stop This Train" are perfectly written. Like others, I'm very glad that he's making great music that's not necessarily intended for the teenie-bopper demographic. I look forward to his future releases.
I stay true to John Mayer's music :)