Most Helpful Guy
Lately I've been giving upvotes to everyone who post on my questions.
MHO is the one answer I like most, or I find most informative, or whichever I just select out of the ones that are there based on whatever magic principle governs my action.1
Most Helpful Girl
Depends on the question. Sometimes the one that makes me laugh the most. One time I just picked the ones that got the most up votes from others.
I see a lot of users just going with the person that tells them what they want to hear1