I use my own system of criticism that inverts the usual scale, meaning that getting a zero (turds) is quite good (and increasingly rare,) and — unlike stars — if you ever reach a five-turd rating you are truly the worst. It saves time in conveying my thoughts on all sorts of things.
Try to live your life:
As might be expected of a device that only exists to facilitate lazy, I don’t have impassioned feelings about any emoji, but I do use the “thumbs up” more than all others combined, so I guess it would be fair to say that’s it. “Thumbs up” is very versatile, and if one is being so lazy as to use an emoji for communication, one might as well go all out an add ambiguity to the mix. “Thumbs up” just says, I have some kind of feeling between indifferent and ecstatic about what you’ve just said.
Tiger Riding for Beginners 