This resembles Clipmarks a bit
, it isn't mentionned but if you click:
'Click to launch the application' it a java app.
and then this message appears:
'Since we do not support a dial up modem user interface, 'PointCast Network micro-communities, now in broadband' is faster, sharper and more user friendly. Our focus is only on the higher end broadband users. Pointcast.com is a futuristic web site where the web application and website are blended into one program, making browser experience more enjoyable for users with high speed broadband access.'
I've read some comments he made else where, seems to say : this IS web 2.0!
Check out the demo

OK, I found something: All the new Clips are dated ' yesturday 6PM', on my computer it' s 1:AM, because it's all on US time! and I don't think Clipmarks have set a 'tomorrow' so it says yesturday...