I hadn’t seen this Square IR page until just a bit ago when Matt Cochrane had retweet them, but makes sense that they’d start one, with Jack Dorsey as CEO of both Twitter and Square. I turned on push notifications for the account, and just saw this announcement for Square Restaurants.
On a related note, my initial impression is that putting out info like this from a Twitter page is a nice use of Twitter and may start to catch on with more companies. I could see Jack helping make it happen, and it could be a decent little part of why Twitter is valuable as a service.
Long SQ, long TWTR via call options