There are over 100.000 web directories in the world, obviously there are many low quality directories, but there is also some high quality directories.
Recently Aviva Directory compiled a list of the world’s strongest directories based on search engine value, and Three Link Directory is on that list.
You can see the entire list here: http://www.avivadirectory.com/strongest-directories/
This proves our directory has great SEO value, as well as being valuable for our users browsing the directory.
Three Link Directory also has a list of directories.