Visually, its supposed to be a heart shape. Such as "I (heart/want/like/upvote) this" What I would describe as mild 1337 speak, using limited ascii art when i

Visually, its supposed to be a heart shape. Such as "I (heart/want/like/upvote) this" What I would describe as mild 1337 speak, using limited ascii art when it shorthand's an idea. "I 52 this idea." Depending on how much you like symbology, since it's 52, it also carries playing card connotations, with "makes a good hand", "hearts the card game", "want this to shoot the moon."