ZDoom

Mediafire has this thing where when you try to download a file, it will switch the site to an ad, usually Opera or whatever. At the same time, it will open a new tab which will download the file.

Is this intended? At least the ads themselves are fairly harmless, but it is REALLY friggin' annoying to have to close two tabs.

That's intended by Mediafire, yes. Part of why I think it's started becoming way less popular of late.

Worse yet, the way they've got said pop-ups set up, manages to bypass most popular Adblock/uBlock filter sets. Since it doesn't happen consistently, either, it's difficult to pinpoint to a single filter rule.

Has anyone tried writing userscripts to override this functionality? I honestly never had this happen to me but I have a lot of stuff set in Firefox that forbids a lot of things like META REFRESH and IFRAME. (and FRAME in general but IFRAME in particular is just bad news all around)

I don't think I've run into it recently but that's because I right-click on the file and choose "Save Link as..." in Firefox. That's how I got around ads. Dunno if that'll work for you.

Now if they managed to somehow get ads to happen through right-clicking, that would really suck. :T

I haven't had an issue, but I do have two adblock extensions installed. (Adblock Plus and AdGuard) so I assume those are just doing a good job of keeping them from popping up. I remember dealing with them a while back, and I agree its really annoying.

I don't think they serve you ads if you're logged in to an account
There's no excuse for this though, it's really annoying and could be outright malicious at times.

I don't have a mediafire account and I have downloaded stuff from their site before and I have NEVER seen an ad on it, maybe one or two, and that's about it... I may be wrong however.

EDIT: Yea there's ads... They're not much of an issue to me, just an eyesore if anything.