If you like to contact me, here are a few options.
- Email usually works best: you can use “rolf” at the domain of this site, or “rolfkleef” at Gmail.
- You could also try via @rolfkleef on Twitter
- Or see if I’m online for a chat on Skype, Google Talk, or IRC. SMS may work too.
- For urgent stuff, try a voice call via Skype or on +31 20 893 2772