My advice? Just don't worry about it. People are going to steal your stuff. At least as modders, we weren't making any money off our work anyway. I'm a little perturbed by someone stealing my stuff and posting it somewhere else (and really? That tiny description is all you can give? Do you know how [censored] long it took to design http://www.newvegasnexus.com/downloads/file.php?id=43680 alone?), but in the end, I just can't let that kind of thing bother me (but seriously, [censored] them still).
they aren't "stealing" your stuff, they are copying & re-hosting it, there's a very big BIG difference between the two
infact it completely impossible for them to steal it, unless it's a physical object, all they can do is take credit for it, which is plagiarism and still leagues away from what copying is all about
"permission culture" is probably one of most frustrating and self-sabotaging things about most art (whether paintings/drawings, mods or code) communities is this constant fixation on obtaining permission
let's get real people, bits aren't physical objects, you can't steal them, all i can do is replicate it and put somewhere else, i cannot deprive you of it
i can understand needing permission if, say, i was wanting to burrow your cup for a bit, because if i take it you don't have it, but with a mod i can make another copy of it, now we both have it, to ask is waste both our times & add an unnecessary step to something that should be pretty simple
all it does is add this extra layer of complexity where there should be none, emails get lost, deleted .etc people don't have time to constantly check to see if, oh, maybe somebody wants permission for something, and they aren't always around
a self-sabotaging system, instead of spending precious energy on actually doing something with the work, alot of is completely wasted on this "permission" thing that amounts to little more than this compulsive need to pat something every-time you set it down to make sure it's there
the more time i spend on something, the more i want people to share it freely, without need or hassle (for both parties) to contact me for every tiny little thing they do
it's like this, if i'm gonna go out of my way for days and weeks to make something, i want it to be seen, letting people spam it everywhere only helps serve that purpose, that's why memes like LOLcats are so popular