as far as i can tell it is an attempt at a new currency but they are just giving you it for signing up for an account. of course a currency is valued based on real supply/demand for its utility plus speculation around the future version of this.
facebook people are peddling it around hoping they are on a 'next bitcoin' and it will make them rich. but who wants a q and why, and why would you trust it? it seems to just be some company making and controlling it, quite different than bitcoin.
it takes little effort to sign up for an account and in theory get you some q. although it may never be worth more than something that takes that amount of effort either. personally i don't suspect it will turn into anything meaningful.
this is not a crypto currency but seems like there plan is to operate as some kind of payment system currency that, really, probably no one needs. you get 2400 just for signing up and their (unlikely) goal is to reach $1 parity. basically:
1. most likely scenario - you redeem these for nothing, although, the effort is just signing up your/an e-mail address. oh well.
2. second most likely scenario, and what i think will happen, some merchants will offer wares in q and your 2400+ q will be enough to buy something worth $1-20, that maybe, you don't even actually want.
3. least likely scenario - they reach some kind of magic parity and being 'early' in means you 2400 q are around $2,400 of purchasing power.
feel free to sign up (or not) through my invite (i'll get some more q).