I like Twitter the most for communication. It’s fast, easy and helps to focus on the best answer I could possibly give you. I have an “ask me anything” page on Tumblr, so I’ll be responding to your general questions there.
On top of that, I have a Facebook fan page, several Flickr accounts and even a Plurk account. And as always, I’d love to respond to your comments on my blog. Basically, there are a lot of ways to contact me.
If you want to send me a private message, my e-mail address is firstname.lastname@example.org. It’s always a pleasure to hear from you!