Getting tired of giving out your real e-mail address every time you want to register to use a new Web site? What you want are disposable e-mail addresses. There's a new system out there for this purpose that's unbelievably simple to use. It's called 2Prong.
Say you're on some new site that's asking for your e-mail address so it can confirm your registration. Don't give it your personal e-mail address. Instead, open another browser window and go to 2Prong.com. On the site there will be a throw-away e-mail address, like this: firstname.lastname@example.org. That address is automatically placed in your clipboard. Do not close the window.
Now go back to the other browser window, the one with the new site in it, and paste in your disposable e-mail address when asked. Back on 2Prong, the page will display your incoming e-mail as soon as it arrives--there's no in-box per se and no need to refresh the window. Once you've finished the confirmation, close the 2Prong window. The e-mail address expires.
It's easier to use than to explain.
2Prong's creator, Mark Percival, says he created the system partly to experiment with AJAX programming and partly because he wanted the features he built, so it's not clear that the site will stick around forever. But you can sponsor it ($20 for 48 hours) if you want to ensure its survival.
Found on del.icio.us.