Well this explains a lot. I've posted a few times here using the name DerpPress, the first or second time I was told to stop impersonating a regular commentor (I rarely read the comments so you can imagine my surprise since I've had the email address for a while). I commented a few other times and either the comments weren't posted. This finally explains it. Clearly I should have searched on twitter and my answer would have been right there in front of me. However this begs the question, if Sarah knew I wasn't Derp, that must mean she knows who the real Derp is right? Or perhaps Sarah IS Derp!