Coinciding with its high showing in the Quantcast analysis, MerchantCircle today announced that it has added a local city coupon feed for Twitter. Merchant coupons will now be fed to city-specific Twitter feeds (i.e., @MCircleNY) so local consumers can find local coupons and events in real time.

MerchantCircle reports that more than 50,000 coupons and events are built on its system every month by local merchants.