Recently received an email from RevitCity.
Here's a partial clip from the text:
Recently RevitCity.com was the victim of a hacker who was able to successfully bypass the security measures we had in place. After discovering this security breach, we moved as quickly as possible to isolate and contain the problem. In order to best protect the server from additional harm and perform a full security examination, it was necessary to temporarily take RevitCity offline.
In order to protect your own privacy, it is always a good idea to change your password as frequently as possible.
The emphasis on change your password is mine. Hopefully they'll get it all sorted out for the long run. I guess it is a sign of the times, that Revit is getting popular enough for a hacker(s) to even notice a Revit site?