really couldnt live without this addon. its real value is in sniffing out the url of the video. i use it to copy the url of the file, then send it to jdownloader, which is a faster more dependable download manager, but on some sites, vdh is able to download files when sending the url to jdownloader causes a failure. the renaming feature is amazing but only works when using vdh to do the downloading. although the description says it can download youtube videos, i have not been able to get that to work. i love vdh.