Comment block indenting = visual (Score 1) 876
I'm probably coming at this too little too late, but:
for C-looking languages (C, Java, Javascript) etc that use curly braces and block, there's usually a strong visual element: no one wants to look at code that's not "properly formatted". So while language is super awesome and powerful (almost any programmer is going to have a hard time expressing himself or herself in, like, that block language that came w/ the original Lego Mindstorms), the graphical element is still present