It's a brave claim to say that your program can download video from any YouTube style website but for the most part, Internet Video Converter succeeds. The few times it would not download videos seemed to be more to do with problems with the website than Internet Video Converter itself.
However, as far as video downloaders go, Internet Video Converter is not exactly one of most straightforward ones. The main interface consists of no less than 5 tabs which all relate to advanced options for downloading and converting videos. You have so many options and parameters available that its easy to lose patience. In addition, after entering the address of the video and downloading it, you have to change the file extension to FLV to view it which is pretty poor.
However, these factors aside, Internet Video Converter's main appeal is in its flexibility and ability to download from almost any site.