Adding my credit card details to Facebook still isn't looked on as sufficient validation for me not to have to type in captchas all the time. I don't use a mobile phone, as I so rarely go out of the house without my wife present that it just isn't worth it - in fact most of the time we go out she leaves her phone behind as well.

Why? Because I once spent 45 minutes of a 1hr trip around a lake on a pedalo during a vacation closing a deal on my mobile.