Though it was only a week ago that John Mayer declared that writing on micro-blogging site Twitter.com is "inherently silly and inherently dumb," that didn't stop Jennifer Aniston's on-off-on-off boy-toy from waxing a bit philosophical on his Twitter page recently. Among such fascinating gems as the exchange rate of Mexican pesos to Russian rubles and the shortcomings of iTunes, the "Your Body Is a Wonderland" singer posted this item onto his Twitter account Friday: Read More >>