Correlation != Causation. It's a highly visible change - users will be testing it out and in many cases it seems - making fun of it. In my opinion the main (no

Correlation != Causation. It's a highly visible change - users will be testing it out and in many cases it seems - making fun of it. In my opinion the main (not only) reason it feels familiar to people is because of Facebook. Since when was it easier to understand the use of symbol for 'love' towards 140 characters of text than use the symbol for 'favourite'?