Twitterep

Full disclosure: Rob Dixon, Dan Hansen, and Laura Ling of Planet Telex own Twitterep. Twitterep is a new way to advertise on Twitter that is actually credible and not prone to spam. This is because it puts the power in the hands of the people. The Twitterverse decides the messages they deem most important. While the system is currently under development, you can sign up now on the site. By doing so, you will have access to free system credits as a beta tester. The full system is scheduled to debut in Q1 of 2010.