You're across from the playground where Jack Dorsey first articulated the idea that would become Twitter (a 2011 Most Innovative Company). His goal? To better organize his nighttime plans.
Employees at Zynga (#9 on 2011's list of Most Innovative Companies), which has developed such social games as Mafia Wars and FarmVille, love snacking on tater tots at this Portrero Hill dive bar.
