So I recently crossed the 200+ reputation threshold and got the association bonus (+100 rep for profiles on other sites) and the bonus was also applied to the site where I got the bonus. It seems odd to get a bonus +100 just for reaching 200 (it would make more sense to apply the bonus only to other associated sites where you don't have the 200+ reputation).
Is there a reason that the bonus applies to the original site where you already had a substantial reputation?