The best way to get in touch with me is via email. You can fill out this form to send me a direct message, and I should reply within about 24-48 hours, even if just to acknowledge that I received it.
If you don't get a response within 48 hours, you can try and get a hold of me through my facebook page or twitter. I am usually connected to the internet, even if I am not at my desk.
You can use this form to inquire about design jobs, or to submit ideas for any of my ongoing series.