Note: If I get enough donations, I will get the pro version of Seyret, the video management software. and there will be a download button for each video in the videos section.

 The feature of being able to download the video is disabled with the free version, so please donate!

Source: Makeuseof.com
(edited by webmaster to make it simple)

 Recommended download sites to save the videos on this site by copying the link when you see the link to see the original video on a particular video you are watching in the videos section:  

ClipNabber.com

  KeepVid & DownThisVideo also support almost every video website out there.

There are two ways to download videos: Either via a web app or via a desktop application.