Mega e-commerce sites like eBay and Amazon are so big they don't provide great vertical shopping experiences. Hip Ecommerce's CEO Mark Rosenberg is a stamp and comic collector. He grew frustrated with this fact and decided to change it. Hip Commerce builds vertical marketplaces (comics, postcards and stamps so far) that are heavily customized for the collector. Want that near-mint condition, CGC graded, Amazing Spider-Man number 300? Go to Hipcomic.com and find that puppy faster than you can anywhere else. Full Disclosure