Google Voice

Everything below is quoted from Google's web page here.

With Google Voice, you get all your calls through a single number. Just add your other numbers to Google Voice and then make your own rules for how your phones ring. Click the Settings link on the right side of the page and click the Phones tab to change your phone settings and add the numbers you want to foward your calls to.

You can access and make calls from the phone and the Web, block annoying callers at will, and record custom greetings for different callers or groups of callers.

With Google Voice, you'll get all your voicemails in one place, saved for as long as you want. If you don't answer a call to your Google number, your callers will be sent to your Google voicemail. You can check messages by calling your Google number, by signing in to Google Voice, or by opting in to receive notifications.

You'll also get more handy features that work across all your phones:

* ListenIn as callers leave you a message
* Record calls on the fly so you never have to fumble for a pen again
* Switch phones mid-call without your caller knowing
* And more...


Sounds pretty fricking sweet to me.