I have one
What it does: this website ("your xbox"^^) automatically publishes every day 1 small blog about your xbox-usage that day.
You can comment your xbox, in case he has it wrong, for example. Or you can write your own blog.
I'm "watching" (sort of like a friend-adding function) 1 other xbox 360 gamer. Sometimes our xboxes compare our gamerscores.
[quote:358vpccv]apple hiku's Xbox - Jan 26 2010
apple hiku had to choose between watching TV and playing with me and I am happy to say I won... this time... Gamerscore is at 21,797 points. That is an improvement of 120 points over last time! He rocked out to Spidey: Web of Shadows gaining an amazing 6 achievements, and then he had to stop because we both couldn't take it anymore... we were spent.