How to Use Emoji Reactions in Your Twitter Messages
by David Murphy from Lifehacker on (#4YG0M)

Text-message reactions-a practice iPhone and iPad owners should be familiar with, where you long-press a message to append a little heart or thumbs up/thumbs down to something-are simple ways to convey a reaction without having to come up with something interesting to say. I find they save a ton of time on my iPhone,"