Track performance from visitors Pingdom has this comming

Pingdom is going to do this and it will be awesome to have this on clicky

"Real User Monitoring
With our new Real User Monitoring service you can track the actual performance experience of all visitors to your website. It’s also possible to see if there is a difference for users in certain regions or using a certain type of browser."

http://adithyab70.pitchmagic.com/