To get involved follow these easy steps (taken from McGonigals blog, avantgame)
1) First, watch The Lost Ring trailer at http://www.thelostring.com
2) Next, learn the legends of the ancient games, including The Lost Olypmic Sport, by watching the video podcasts at http://www.thelostgames.com/
3) Then, meet the global cast of characters -- they're blogging in eight different languages! -- at http://www.findthelostring.com/
4) Finally, if you're hooked, visit the players' wiki to catch up on the story and puzzles so far -- it's at http://olympics.wikibruce.com/Home
Let me know if you find the lost ring...