The best way to reach me is via email at kbrennan@mit.edu
I am Karen Brennan on ScratchEd.
I am karenb on Scratch.
I am karen_brennan on Twitter.
I am karen.brennan on Skype.
I very rarely answer my phone, but if you would like to leave me a message, you can reach me at 617.253.6739.
You can usually find me in the new Media Lab complex at:
75 Amherst Street
E14-445
Cambridge, MA
02139
USA