I like that idea aswell.

I think 2 months is a good limit as people do have lives as well as 3D.

The thing I noticed is a lot of the regular peeps don`t take part any more. Cant think the last time Arren joined in (me and him had a lot of fun with some of the older challenges)
But saying that the number of people on the site at any time has seem to have gone up again as it feels like it dropped for a while.