Webutation scan's websites against ongoing malware scripts and collects realtime user feedback and experience. It is free and open! Safe Surfing!
This is one of my favorite website worth calculator because it works fast, has a nice design and gives somewhere accurate information. My favourite feature is social buzz which shows information from social networks so you can see what other people have to say about this website. The one thing that bothers me is how they calculate their trust rating because many websites with no backlinks, no visitors scores 100/100. It feels nice to visit this website because developers have done a great job to optimize this website and it loads very fast on any web browser.