Tangler is reinventing online discussion boards using the latest Web technologies, making it easy to keep track of several discussions at once. Tangler is live, so the minute someone responds to your thread, you're sent an alert -- even if you're not on Tangler at the time. The 12-person site claims more than 10,000 active discussions and is now in the process of raising a second round of about $2 million.
CEO: Martin Wells
Location: Sydney, Australia
Launch: July 2006
Funding: $2 million (angel investors)