“What’s the status of the AGA rating system?” wonders EJ reader — and AGA member — Brady Daniels. “ It seems updates have become scarce recently, and I’m sure your readers would love to know why, and what solution is planned. Shouldn’t ratings be updated after every weekend tournament, or at least, say, twice a month?”
Provided that tournaments report complete and accurate results, the ratings are currently updated at least twice a month. Email ratings@usgo.org if you have other ratings-related questions or comments. 

via American Go E-Journal http://www.usgo.org/news/2013/09/your-movereaders-write-status-of-the-aga-rating-system/