One of the things I hate most about Web 2 websites is the registration. A lot of websites require registration before you can use their services. In order to register you have to enter a valid emailadress that can and will be spammed from that moment on. So what's a modern guy to do ? Visit 2prong. Why ?
Each visit to 2prong puts a generated emailadress on the clipboard of your computer. Now you enter that emailadress in any site's registration field, and any email sent to it within 24 hours is shown in the 2prong page you opened before. And most of the times that's enough to get through the registration process. But you have to remember to keep the 2prong webpage open. Pretty good, this one.