I haven't gotten into MSFP or the like, but I like helping with the world's plot anyway. I've won 25$ in the Oracle contest, so I've told Stuart to put it towards further public contribution opportunities such as contests. He suggested that I do a small contest myself, for the 25$ and another 25$ from him.
So, selfish as I am, in one month, the 50$ go to the highest-karma answer, and another 50$ from me go to the answer that actually gets me to contribute. (In case of ambiguity on the latter, I try to award the cause of my best contribution. AF karma would be a good measure, except maybe the opportunities aren't all on AF...)
Examples of where I'm likely to contribute can be found via: https://www.alignmentforum.org/users/gurkenglas
Note how 25$ of prize money turn out worth more than 25$ in your pocket :)
Edit: Contest is over, contestant wins 50 dollars by walkover.