How many support requests do you get per day and are you getting the same questions again and again? One idea would be to make your support page show an FAQ and include a "contact support via email" link at the bottom. I only get 3 or 4 a day so don't have a problem answering them right away. It can be a distraction when I'm deep in work mode, but I also often learn something important talking to users, so worth it for now.