Quote from SnowRunescape»Want to know how I can add my mod to the site? http://www.liteloader.com/mods
My mod adds skins in version 1.5.2, loads the original Nicks skins, and loads registered player skins on the SnowDev website https://minecraft.curseforge.com/projects/swskin
That looks to be a mod that lets non-registered users have skins. I'll probably report it in curse while I'm at it.