If you have an email ending in @hotmail.com, @live.com or @outlook.com (or any other Microsoft-related domain), please consider changing it to another email provider; Microsoft decided to instantly block the server's IP, so emails can't be sent to these addresses.
To inaugurate this forum, I've written a set of puzzles.
The puzzles can be found here: http://ducksoup.vbprog.zonexus.net/puzzles/whowasthat/
Feel free to start threads for solving each one, though they should still be solvable even if you're working on them alone.
If you have questions about the puzzles themselves, including inquiries about errata, please post them here.
(For new people: If you are interested in joining the Duck Soup team for the 2012 MIT Mystery Hunt, make an account on the forum. Forum rules can be seen here