Google Voice customers can now use their existing phone numbers with the service, which will come as good news to people who don't want to give out a new number to all of their existing contacts. But there are some catches.
First off, this isn't quite the same as transferring a phone number from one carrier to another; your number still works with your cell phone or landline. Instead, Google Voice will intercept calls going to voicemail, thereby providing you with transcriptio
n, e-mail integration, and the other goodies that Voice users have come to rely upon. Secondly, if you want to use call screening, forwarding to any phone, or other features of the service, you'll still need to give out your new Google Voice-assigned number.