Still don't understand what the "challenge" part is..... be easier just to ask for donations...
The challenge part is to create awareness. Still there are a lot of users who has not discovered this project yet. :-)
If there were not this challenge part then perhaps I would not see you now, may be after few days or few weeks or few months or never :-D
This message needs to reach to every possible users in the forum and to achieve this I would like a challenge game. Do we remember how we created awareness against ALS, the ICE Bucket challenge? I think we can use the concept and create our own version.
I hope now it makes sense a bit for you? :-P
PS: You really do not need to accept a challenge by the way.