HN user
I'm not sure of the specific relevence to this article, since it was a good while ago i listened the details mostly escape my memory, but you can grab a good background on why GSM is insecure listening here: http://twit.tv/sn213
I think it's closing later this year
"Existing GeoCities accounts have not changed. You can continue to enjoy your web site and GeoCities services until later this year. You don't need to change a thing right now — we just wanted you to let you know about the closure as soon as possible. We'll provide more details about closing GeoCities and how to save your site data this summer, and we will update the help center with more details at that time."
http://help.yahoo.com/l/us/yahoo/geocities/geocities-05.html