Personally I am doing some rather more complex stuff where I author notes using @-names, which get parsed by @cassisjs into
.h-x-username twitter.com-linked anchors, then I transform those into
.h-card’s with data either from my contacts DB (at the mo mirrored from my personal CardDAV share) or from the identengine.com API for people I don’t know. Then all the links in a note get sent pingbacks.
Fat chance of twitter implementing that though ;)