Last week after taking a break from VS+ i built a small mashup i was thinking of sometime now. Its basically top sites list based on keyword and traffic. It quite simple and i myself have started using it to find sites.Go check it out !!! For example you are looking to do some cooking and looking for top cooking sites in the US, or maybe top lyrics sites or maybe just looking to download some illegal movies 
. You can find out new websites which you might have never heard of on popular topic … which u might actually use.
Site is in beta and i am working on it in my free time , if you have ideas and suggestions please feel free to let me know.