I can see that quite a few people are struggling with the playing of the tour - we will have to make this more obvious. I don't think Prezi offer an easy autoplay option.
You are right with regard to the user experience and this is something that again we are rolling out in the next two weeks. We have made a video of a user bookmarking, discovering and doing other bits and pieces to do with the site. We will post this somewhere on the site (still to be decided!) and hopefully this can solve this issue as you are right from the homepage you still don't get a complete feel as to what Favilous does.
May well take you up on the email option - thank you for this. Also, we are offering a yammer style service to the worker (see my comments below). Would like to know what you think of this?
thanks