Since it looks like you live in or near DC, I know of a couple within a reasonable driving distance:
Every Thursday night when the weather is decent, a bunch of people meet up at Famous Dave's on Route 40 in Frederick from 8-9 pm until whenever.
Every Friday night when the weather is decent, a bunch of people meet up at the Flagship carwash in Gaithersburg next to the Criswell Chevrolet dealership in the early evening and hang out until whenever.
Not sure if either of those interest you or not.
As far as a WRXTuners-specific meet, we just started discussing a Spring 2014 meet, but nothing is set in stone yet. I'm sure somebody will post a thread if things start to get more serious.