Occasionally in the ZX scene you see a few "dodgy things". Websites distributing "access denied" games is the common one (tho' let's be honest... we all want to download the Dizzy games from somewhere). Recently I've seen a couple more, including a crack for a famous (and slightly controversial?) emulator - no, I'm not giving you the link as I'm all for legal software usage.
The most recent was spotted this morning. I guess we've all wondered how best to create a decent ZX software archive in the past. Well over on the Z80 Asm project they've worked it out... provide a copy of the WOS ftp archive. Mirrors are fine I guess, but at least some credit should be given to Martijn van der Heide who does the hard work. Not all of the archive is there (perhaps it's not all be downloaded yet), and I've not checked to see if any "access denied" games are there, but the structure is certainly familiar.
Like I say, it's mainly public domain software and can be freely downloaded or uploaded wherever. It's just a nice idea to credit the people who put in the work. If you really want to provide the files on your server, become an official mirror.
Just my thoughts. Hmm.