I saw some threads here and there about this and that website. They're okay and they're reasonable. But, let me show you a higher level, which really worth to compete and/or to use it as an IDEAL or a MODEL for development.
I heard a proverb (maybe not English): DON'T RACE WITH THE DONKEYS, WHEN YOU CAN RACE WITH THE HORSES.
I hope you like it. And now I'll show you A MUCH BETTER EXAMPLE/IDEAL and even MODEL than many websites were mentioned.
You can see the best ones here:
http://www.alexa.com/topsites.