Some people recognize FIRM, others don't. As mentioned before, it depends on how you were educated. I am a sister of SLG (a founder at my school) and I was not taught to recognize Sigmas or Zetas as "cuzzos" but when I first wore my letters on campus, my line sisters and I were approached&welcomed by the blue and white family. I don't think people should push the "connection" onto others, if you like the idea of FIRM than that's great. If you don't, that's also great. To each their own!
Oh, and this is in response to an old post that said we were up to 26 schools. We are now up to 126 chapters now!
And that's not including our colonies!