Linking Secondlife to technical communication

I've been wondering for a while how/if Secondlife could be used as a medium for technical communicators. Yesterday I received an email that illustrated one way of using it. It said:

"DITA User Meeting at Secondlife. Join us today at the DITA Chat-Meeting in Secondlife. Today Tuesday again at
9:00 - 10:00 am PT/PDT
12:00 - 1:00 pm ET/EDT
6:00 - 7:00 pm CET/CEDT

SIM Address at Secondlife: Addicted to Reality 13, 27, 24
Explore the new way of meetings."

I suppose it makes a change from a traditional conference call.

There are a number of organisations I know that are using Secondlife to market/advertise there services. Could it also, I wonder, be used to deliver training seminars?