I've been using SO for answers for years and just recently am making efforts at contributing by answering questions, so my knowledge of the etiquette is lacking.

I recently answered a question for a member, to which he accepted the answer, and in the comments left a "Thanks for your help. Rep for rep?" type comment. I am only assuming that the user is asking me to help out with his reputation since he accepted my answer, but honestly I'm unsure how to, or if that's even something that is accepted here? I really love Stack Overflow and certainly don't want to do anything that's frowned upon.