Could an admin add this to the appropriate place? https://orthodoxwiki.org/User:Dclark/common.css
It gives icons to youtube and reddit links, like the facebook icons you can see at Livestreams.
Also you might want to add the
padding-right: 0px to facebook and any other pre-existing instances of icons, as there is a bug where a big space is inserted after the link which looks ugly, e.g. in "here." there is no space in the wikitext between the link and the period, there is just an unfortunate 13px padding for some reason.
(Note: If you want to add icons to other links, the awesome font icons are all listed at https://astronautweb.co/snippet/font-awesome/)
Test of FB.