Are you determining success based soley on how much income the website is generating? There's many out there that aren't making much money, but have tons of traffic on a daily basis.
One of those that I like to read once in a while was created by satire writer named
Maddox -
The Best Page In The Universe.
Money wasn't a motivating factor, but I heard he still makes a decent amount of cash from selling merchandise and his book sales.