Thanks to everyone for their replies.
The writer will own copyright for their work, as it is their work - however when we publish said work and send a payment over, the idea is that piece of writing is then for the magazine, so we'd just ask that you then let us know and check with us if you're then wanting to publish elsewhere. In most cases we won't mind at all, but we'd just like to be aware where duplication may appear.
In terms of my own background, I'm happy to answer how I paid my bills etc. I suppose it is the same for most people in the creative industry - this sort of work is interesting and fun. It is hard yes, but we do tend to do it without expecting to earn lots as the primary goal (at least that's always been how I've felt). I think if you're writing to simply earn money, you may struggle to write something interesting and could be doing it for the wrong reasons.
Just like any struggling artist, I always tried to get my name out there and gain experience - then more pay, respect and wages came along as a result of those efforts. So for myself, while I was a trainee journalist, I worked for 6 months at the newspaper and then had a second job at a museum to pay my bills. I'd do the tours for school groups etc. I'm not sure that where I used to work is that relevant really, so I won't go too off-topic - but I guess my point is I wasn't writing for my income, I was trying to get into the industry so that one day it could lead to an income. If it hadn't led anywhere, well so be it! I tried.
It sounds like you must have had a bad experience in the past x=usr(1536)? I do feel for you if you've worked hard and expected money and been let down or not received what you deserve.
But again, I can't see any problem with submitting writing to a publication without being paid (if you already know you aren't going to be paid) and you're doing it as a hobby, or for your interest. Sometimes it is nice (and reward enough) to have your name in print and know others are reading your article.
As I say though, we do pay our writers. But I'm not going to start telling other magazines what they should or shouldn't be doing. It's a free country (world?!) - and as long as people know what they're offering up, I'd try not to be too cynical and spoil their fun. I respect your opinion though, we've all got that right to speak our minds. No one wants anyone being exploited or cheated.