This concerns the "International Piano Sheets Collection" threads/sections, as stated on Twitter and one of the ChatBoxes, I'm currently resolving the issues on broken/unavailable download links.
I'm in the process of switching file host (formerly 4shared.com) because I've been repeatedly reported for abusing the service (i.e. uploading/sharing piano sheets via the site). And so, I guess it's time for me to do something about it so you guys can continue to have access to those files.
It would definitely take some time, so please be patient with me. I apologize for any inconveniences caused. Oh and apart from fixing the problem, I'd be adding/uploading new sheets as well, so stay tuned!