Let me say first I am quickly becoming a member of the Andrew and Nuno fan club. You guys are something special, and as a person who has started and sold a software company in the past, that isn't a compliment I hand out often.
If I had to *nit-pick* on emojis:
* They are perhaps a bit too large. Maybe 70% of the current size would be optimal.
* When browsing them in your viewer - and separately when reading them inside of PM or replies - it would be nice to have a one word summary pop up on the screen. That better ensures a handshake between the writer and the reader on the meaning of the sign.
I love the recently-used feature. Not sure if you just implemented that.
