web 2.0 site iStats

I was intrigued by a site that let you post your workout results and did reports for you. Giving you access to your workout stats on the internet and letting you compare or work with others accross the country, is a good benifit to people. I know for me, I have a friend that is a personal trainer and this would allow him to keep up with my workout and tell me what adjustments to make, without me having to email all the info and then having him to look at and make up his own reports. And for those that travel all the time they wouldn't have to keep up with a notebook to write everything down in, just put it in online and access at the next city.
The site was a bit awkward in the demos with the volumn all the way up on the video and on my computer still couldn't hear the voice and the video didn't show much other than the screen they were talking about. But the site seems pretty straight forward, type in your numbers under the correct category and excersize.
I don't see this site being much use in a library. But maybe something like it that let you take note of what you read, how long it took to read it and how often you read. I know some patrons want books that they can read in a night or if they are going on a trip something that will take most if not all the time away to read.