Why do per-site metas offer flair? By this, I mean, are users really keen on knowledge about the Q&A site about something?
2 Answers
I was under the impression it exists here for meta.so because it is just as easy to do it as for any other site. It's there, so why not have it enabled?
For other metas, you just have the rep of the main site
[edited because I had things the wrong way round - so wrong :-)]
It's a good measure of activity on Meta. Someone with a couple silvers and a handfun of bronze badges has actually been using Meta. It's impossible to tell that from rep.