While they do not have SMS Chat, Gmail has added video and voice chat.
If you have a webcam and a Web browser plug-in, a video chat with other Gmail users is just a click away.
Not having a webcam shouldn't be a deterrent to see friends and family for a chat. If your PC has a microphone plug, you can use it. Google also assists by directing you to Logitech and Buy.com.
Skype better watch out; Google is right on your tail.