I try to respond to most of my e-mail in a few days, but it sometimes can take longer.
Note: This contact form can sometimes not work, so you can also e-mail me at <firstname>@<lastname>.net -- see the header for my first and last name (don't write out Benjamin)
Also, try the instant message widget floating at the bottom-right of the window. That way you can get a response as soon as right now. And we all love instant gratification, right? This usually works because I'm at a computer for most of the day. And if I'm not there, you can leave a message.