We are proceeding with this project in baby steps. About one year ago we invited a small number of AIML botmasters to join and contribute to the Wiki, to see how the project would go and what kind of problems we might have. As you will see, the free Wiki software at wikidot has some problems with respect to AIML files. We plan to migrate to better Wiki software at some point in the future.
The Wiki is already populated with AIML from the AAA set, foreign language AIML, and contributions from Square-Bear and Peter Lafferty. If it works, it will become a large repository of "the latest and greatest" AIML available. Please give it a try and give us your feedback.