With all the buzz around Web 2.0 and AJAX, mash-up applications are becoming very popular. In fact we launched our Mash-it-up with Atlas contest last week. But what are you going to mash up? I asked about public web services here. Well I have compiled a list and posted it over at http://www.federaldeveloper.com. It turns out that most of the government web services are for “authorized use only.” The list is a mix of commercial and government web services. If I missed anyting, please let me know.