Many of us spend hours a day on our browsers surfing the web both at home and from the office, but we dont really do much with our web history, which could really serve as a goldmine of information. Nebul.us, a startup launching today in private beta, is looking to tap into this data, leveraging it to offer a cloud-based web history, a productivity tool for monitoring how youre spending your time online, and a social link sharing service. The site is now in private beta, and 500 TechCrunch re....

