Qos Wife [final] -

The symbol is frequently used in social media bios, hashtags, and content themes to signal membership in the community to those who recognize it.

* (computing, telecommunications) Initialism of quality of service. * (slang, sexuality) Initialism of queen of spades. Wiktionary, the free dictionary QOS Wife [Final]

Within this community, this feature serves several specific purposes: The symbol is frequently used in social media