Upvote it if you want to see it happen! I provided an admittedly overdramatic explanation as to why I think the meaning of +1 is better than “like” or even “heart” for that matter (sorry, Jeff! ).
If a user were to interact with this icon, it could be used to convey a generally positive emotion instead of a single emotion that a thumbs up (like) button and a heart (love) button are ultimately limited to. “+1” can mean many different things, which is why I think it has an advantage over the traditional like/love buttons and should be implemented as an icon into Font Awesome. It is so simple, yet so powerful at the same time.
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