Just a small design note: the white on green is pretty hard to read. (Maybe it's just my monitor or I'm getting old.) I'm assuming that image goes a long way to explain how it works, so legibility is paramount.
Thanks for the feedback! Absolutely - that was actually a screenshot from the iphone messages app. I tried to replace green with blue with not the best results :) Ive introduced the "Examples" section at the bottom though.
