Did you set the "in crowd #" at 400 twitter followers because that's what you have? Because 400 is pretty low, I'd say the number should be closer to 15,000
15k followers is not in-crowd that's more like the exclusive country club crowd. Most seem to have 60 or 70 followers. The people who are just random programmers and not real marketers seem to have 400-600. But I obviously did not do any serious research on this.