I’m not a big fan of chain coffee shops generally, and I don’t normally dole out free advice to companies charging more than $3 for a fancy cup of joe. But with the news last week that Starbucks is expanding its list of stores serving alcohol, I feel compelled. If they do this thing right, the experiment could change North American after-work culture for the better. Forgive the cynicism, but I had feared critter plonk, bland lagers and Skinnygirl Margaritas. But the reality is that Starbucks appears to be getting this right so far.