Data collecting / Market research

Project: Search, explore the web for biggest sites. Categories: - Marketplaces: general(ebay, amazon,etc..) , real estate, cars classifieds, jobs - Social Media sites: video, photo share, business relates, realtionships etc.. - Free email services - Dating - Gaming: casino, online games, massive multiplayer games - paid erotics SITES: 1. List out all the general biggest sites 2. List out the 3 biggest for each category for countries: USA, UK, AUSTRALIA, NEWZELAND, FRANCE, GERMANY, POLAND, SPAIN, ITALY, RUSSIA, INDIA, CHINA, JAPAN, BRAZIL, INDONESIA, MALAYSIA 3. Check alexa tarfic rank for each site 4. List out other details of the sites Looking forwads to your offers. Thank you!