http://mathgate.info/treasurehunt.php
There are a lot of treasures ranging from 1 mbit to 1 bitcoin, so it's less winner-take-all.
I know a lot of people worked very hard on this puzzle and are disappointed that they didn't get the treasure, or even part of it. I thought of a way to alleviate this a little while also helping me out with a little market research as well.
It's clear to me from this monster thread that the idea of a treasure hunt that leads to a bitcoin private key can be a popular idea. This is also what's happening at mathgate.info, but the "search" simply involves finding a certain formal mathematical proof. I'm happy for the OP that her treasure hunt went so well, but I'm wondering why there's not more action in the mathgate.info treasure hunt. It seems to me that you are the people to ask.
I have 0.4 bitcoins to give away. The first 4 users who have at least 3 posts in this thread will get 0.1 bitcoins if you post a reason that you are not taking part in the mathgate.info treasure hunt. (If you are taking part in the mathgate.info treasure hunt, then you've probably already found 0.1 bitcoins there anyway.) I'll skip responses that are clearly intended as jokes. It's the first 4 users with reasonable responses that will get 0.1 bitcoins each.
I am not taking part because I was unaware that it was happening.
Edit: I clicked on the link and my eyes exploded. Add that to the list of reasons I'm not participating.