Well, I was thinking along the line of simple, small animated gifs. I think Carrara can output those. And if they stay small enough (maybe litst could suggest a file size limit), we could just post them here, like any other image. If you have been doing a lot of animating, the kind of challenges I have in mind may be too beginner-level to be interesting to you. Like, for example, the first challenge might be to move a primitive object from point A to point B, using two keyframes and letting Carrara do the rest (this is similar to the first project in the book I'm working from). But the idea is to build on each challenge so that the projects become more interesting as time goes by, so maybe we'll catch up to you. On the otherhand, if you animate 90% of your work, this may mean you are the resident expert, so maybe you'll have to explain everything to us beginners! (See... my evil plan worked... now we all know who to bug when we run into problems with the Carrara animation tools... mwahahahahaha <== evil laughter).