The best platform for the best reactions.
Carefully consider what you are reacting to. Perhaps reacting to that 4chan thread isn't the best choice. Your face breakingly wide smile at watching a midget run over by a truck may hurt future employment chances.
Your screen turns white while your reaction is being captured. A feature? Or am I just too lazy to add another UIView to the app. You decide.
As previously mentioned, we love sharing. Originally we had 1-Click Sharing, but after consulting with our attorneys, they suggested it might infringe on Amazon's 1-Click patent. So we changed it to Minus 1-Click Sharing. Meaning it takes a click to not share. Groovy.