CommandShift3 is a website that lets you choose between two website screenshots in a "battle" and vote for the one you find most appealing.Design is a challenging thing for non-designers to wrap our heads around, but we think we know it when we see it done right ("I want it to look 'clean!'").
It's a fun site to play with and some really nice pages get voted up allong the way. CommandShift3 is the keystroke combination to grab a full screen capture on a Mac.
Built at a New York co-working event called Jelly, the site offers best and worst lists for each day, week and all time. You can also view the best sites by tagged category.