There should be a CTA button alongside the glyph unless it’s shown in a lineup with other social media icons. The minimum clear space between the glyph and other visual elements is one-half of ...

A simple concept in software—an icon that would allow the user to register approval or agreement—became a core element of the social media that transformed the internet.

Spotify’s replacing its heart icon with a “plus” button that lets you save songs to your library and add them to a specific playlist. It’s rolling out globally on iOS and Android.