AT&T and Starbucks have finally rolled out free WiFi to Starbucks Card users registered with AT&T.  The catch is that this is actually an ad-funded service- in exchange for letting AT&T send you four emails a year, you get a single WiFi session of up to two-hours per day at ~7000 US-based stores.  Nice.

Free AT&T WiFi now at Starbucks - Engadget