I'm guessing time and date only websites.
I couldn't possibly know that.There are far to many sites
Lately its been Myspace. LoL :P
The least website use or want on is WW.WWW.COM
There's a few different. Sites that get no traffic.
I Have No Idea Barney.com? Who Watches Barney The Dinosaur??
This is an impossible question as there are 1000s of websites that aren't used at all!