If you want to get in touch there are several ways. If you want to make sure that I'll respond quickly you should drop me a line. I'm also on Twitter, Skype, and Flickr.
You can also send me S/MIME encrypted messages (ping me and I'll reply for you to get my public key) or you can send me PGP encrypted messages (both to flo@flohei.de). Here's my public key.
Alternatively, you can sign up for my mailing list: