I have no idea whether this is a sign that Twitter is truly just a fad or whether this is a sign of the marketing future, but Mashable's coverage of search agency 360i's beer-pouring Tweets got me -- at least -- thinking. About why 360i has an office beer tap. About why DMNews doesn't. About how marketers can put automatically tweeting about chug-a-lugging to good use. That might take some deep thoughts.