Describe how famous preserves semantic HTML

This tweet pointed out a very common misconception about Famo.us that should be addressed
https://twitter.com/nathfisher/status/463853749073477632

Famous is no worse for the semantic value of a website/webapp than previous methods, but at first glance it looks that way. Unless you spend enough time with it, it's hard to realize this. To make sure people don't avoid famous over this misconception, I wanted to address here in the Render Tree guide.

I may have been a little wordy. So edits to reduce it's length are welcome. 

"Je n’ai fait celle-ci plus longue que parce que je n’ai pas eu le loisir de la faire plus courte."
-- Blaise Pascal