As of today, SocialFolders supports Facebook, Flickr, Photobucket, Google Docs, Box, YouTube, Twitter, SmugMug, Instagram, and Picasa
We don’t support downloading from YouTube as of now. YouTube doesn’t offer an API (the developer interfaces we use to connect to other websites) for downloading as of now. We might use other ways to download from YouTube in the future, but first we want to make sure that they agree to this.
SocialFolders doesn’t run on Linux yet. We support Windows XP, Vista, and 7, and Mac OSX 10.6 or later (Snow Leopard and Lion).