#tip: If you're a uMatrix user and find some Diaspora functions aren't working for you, check your configuration
I found that username expansion on tagging wasn't working until I enabled numerous additional domains. I need to to some further research to find out just what settings are or are not necessary, but poke around within the grid if bits seem missing.
Among features:
- Rich text editor.
- Preview display.
- User tagging (this has been the big one for me).
There may be other functions/features I've not run into yet.