Collection of websites based on their usage (e.g., communication). Recommended by Peter McDermott, President of the NYS Reading Association (2012-2013).
KeepVid (free) allows you to download videos from many places (including YouTube, Flickr, TED, Vimeo and more) and then show in your classroom. It's free--you choose whether mac, PC, mobile, etc and the download. It really addresses where some schools 'block' all YouTube or there are buffering issues. I tend to use the mp4 version, but you have choices of file type too.