Hi Severed, welcome to Planeshift
The current tech demo is Atomic Blue, which has been around for quite a while now - you won\'t find many people actually on there.
Your best bet is to wait a little while for the iminent next release - Molecular Blue - which will have a host of improvements and loads of people will be logged on to see it.
Unfortunately these are only tech demos, so no actual \'real\' playing goes on, just exploring, chatting etc. But it\'s cool to see things developing - look forward to seeing you there
EDIT: PS is a completely free project, you can download it
here, but like I said you\'re better off waiting for a few weeks till the next release.