Viewing profile — pleasedontsell

Maybe it uses font ligatures to change based on the surrounding characters. https://en.wikipedia.org/wiki/Ligature_(writing)

That's not a separate clone, just a different front end, basically just a proxy for everything on twitter.

The article cites the second and third ranked instances as the most active instances and prevalent CP communities, but both are japanese so I'm going to guess it's mostly drawn art…