Share your trips with Dopplr

Dan from dopplr has introduced us to Dopplr.. a cool social networking tool for those who travel.. think share your trips and your schedules... man this could be cool for me over the next month which will take me from San jose, Denver, Seattle, and San Diego.. i'll have to check this one out - see www.dopplr.com - the app provides some very nice security features for those of you concerned with sharing too much about your location - a nice touch