+1 the header is gone via Opera Mini and their proxy. Leaving O2 after this, definitely not cool.

I've had similar symptoms, and finally got around to getting an eye test. Bottom line I need glasses too. I started getting very bad headaches in my late 20's, I'm early 30's now.

Glasses make a World of difference, esp as I am usually looking at more than one screen and switching between them. I went for a very light frame, like Lindberg for example as these were most comfortable.

Hi, nice app. Just to be a pedant, there is a syntax error in lesson 5.

if 2 + 3 = 5: print "OK!"

Should be:

if 2 + 3 == 5: print "OK!"

That was the lesson, to see that the IDE does not compile errors and has syntax highlighting for it.

Good post Joel. It's really hard to have that mindset, but I think you're right. Promote and gain traction, then refine.