So how about the new Google Voice?
Jeff Bertolucci at PC World in his June 26, 2009 article Hands On With Google Voice -This Is Really Cool reviews "Google's long-awaited Google Voice phone management service that finally became available this week to a lucky few" writing:
"Google Voice provides a single phone number, such as 415-555-1212, for all your cell, home, and work numbers, and lets you manage your voice services online. Unlike a landline service, a Google Voice number isn't tied to a geographical location. Unlike a cellular service, it's not linked to a specific handset. And unlike a VoIP line, it's not matched with an IP address. Rather, it's tied to you. So if you move, change jobs, or switch wireless carriers, your Google Voice number stays with you. One drawback: you can't port your current number to Google Voice, although that option may be added in the near future, the company says.Read the rest of Bertolucci's review of Google Voice.
This isn't a Skype-type service either. You don't use your computer to make phone calls, and there's no additional software or hardware to install or buy. (You can, however, use the Click2Call feature from the Google Voice website to place calls.) Is it perfect? No, it's got a few quirks, and the myriad of configuration options can be confusing at times. But Google's onto something big here. A service that helps manage the multiple phone lines in our lives should have universal appeal." [emphasis added]
Unfortunately, Google Voice is open to use at the moment by invitation only.
Click here to sign up at Google for a Google Voice invite.