strava website

there is a website i have just stumbled onto - www.strava.com. it allows you to download your rides from your garmin and then compare them with others ie race against the clock over a certain course. also gives HR, speed, elevation, watts etc. bit like the garmin website but with this nifty ability to compare against others and be ranked! there are a number of nasty climbs (on road and off road) in canberra that are listed and i am KOM on one of them (casuarina climb) but am well down the list on a few others :).

have others has experience with this website? any views?