Hey Martin, thanks very much for commenting. The mobile app is winging its way to my mobile right now and I’ll let you know how I get on. Will be very interested to see how it compares with Windows Live.

I’m truly intrigued about the usage figures for the directory. Out of interest, how do you know the usage figures, and do you know anything about the demographic of users? Really interested to find out more. I probably ought to do a bit of hat-eating too: a billion uses a year is pretty compelling. 😉