Grand Central is becoming Google Voice. While it isn’t open for the public just yet, it is a step closer. If you have a Grand Central account you can convert it to Google Voice. There are a quite a few new features. Some of the big ones are: Voicemail transcription, free outgoing (and incoming) calls, and SMS messaging. It sounds like they are looking at adding the ability to port numbers into Google Voice in the future. This could be a very big deal. You could move your main number into Google Voice and then have it ring whatever numbers you want.
I have had Google Voice for 2 weeks and I love it. I just posted a review / walkthough to my blog on the service. Check it out at techietalker.com
Keep up the good posts!!