How do you define MMOFPS?

The Massively chat room was the setting for an interesting discussion about MMO definitions recently. And, as often happens, said discussion ended up inspiring a Daily Grind. This one here, in fact. We were talking about the term MMOFPS and more specifically, the definition of it. It's one of those thorny, subjective things quite like MMORPG or even MMO, and all of the people participating in the discussion had different takes on it.

So, for today's Daily Grind, we're asking you to weigh in. What specifically makes an MMOFPS an MMOFPS as opposed to an MMO shooter or more simply, an online shooter?

TH

MMOFPS only has one definition and its fail.

I guess it depends on what you consider massively multiplayer.  What's massive?  64?  Surely not.  128?  Not really.  300?  500?  Maybe.  But there's no MMOFPS that can really pull off the amount of people we expect from MMORPGs yet.  Most games that call themselves MMOFPS really aren't.  Planetside 2 does it decently well, might be a good game in a year or so.   They keep fixing stuff that isn't broken cuz of the qq.  Plus it's really 3 server with 300 or 500 per side.  Getting closer, but that game is already notoriously shaky on even the best machines.