A brief acronym standing for "smile out loud." It was designed to bring about clarity to the reaction "lol," or "
laughing out loud," which no one actually does while reading text or chat.
Although more accurately abbreviated as "sol," that would just sound and look stupid; and is often misinterpretted by non-English speakers as other words, such as the sun.
Intended to bring clarity of intention for lazy people who can not actually type their responses. It reflects a positive response, without
insulting the receiver with a "lol". Can also be used as an
adjective or verb, such as smolicious, or smoling.