Google Voice - current features

Google announced google.com/voice and also m.google.com/voice and I did a quick comparison with current features available from other carriers and providers.

FEATURES
Google Voice	Exists Today	Comment
Call screening - Announce and screen callers	Yes	Similar to CID
Listen in - Listen before taking a call	Yes	Using a voice messaging system
Block calls - Keep unwanted callers at bay	Yes	Similar to *60
SMS - Send, receive, and store SMS	Yes-mobile	Exist on mobile phones
Place calls - Call free within the continental US and to Canada	Yes	e.g. Skype
Taking calls - Answer on any of your phones	Yes	Similar to “call follow” or “follow me”
Phone routing - Phones ring based on who calls	Yes	Using IP-PBX
Forwarding phones - Add phones and decide which ring	Yes
Voicemail transcripts - Read what your voicemail says
Listen to voicemail - Check online or from your phone
Notifications - Receive voicemails via email or SMS
Personalize greeting - Vary greetings by caller
Share voicemail - Forward or download voicemails
Conference calling - Join people into a single call
Manage groups - Set preferences by group
Call record - Record calls and store them online
Call switch - Switch phones during a call		neat
Mobile site - View your inbox from your mobile
Mobile apps - Try our apps for Blackberry and Android phones
GOOG-411 - Check directory	Yes	Most voip providers, legacy carriers