The FAQ for WebApps doesn't mention any effect on rep of accepted answers.
Here's how it works: if you post a good question or helpful answer, it will be voted up by your peers: you gain 10 reputation points for an answer, and 5 for a question. If you post something that's off topic or incorrect, it will be voted down: you lose 2 reputation points. You can earn up to 200 reputation per day, but no more. (Note that votes for any posts marked "community wiki" do not generate reputation.)
I'm assuming this is because (as shown in the other questions) this site is based on StackApps.