Bitp.it
Bitp.it is an embedable Javascript Bitcoin Miner which creates a Distributed Miner through sending workunits to different browsers viewing a webpage.
Overview
To use Bitp.it, the user signs up on the homepage. They then are sent a customized javascript script to embed in the <head> section of their webpage. This then uses the browser of users viewing the webpage as a Cpu Miner, pooling the distributed resources to earn Bitcoins through Slush's Pool.
History
The project was announced on May 20, 2011 by 1bitc0inplz, one of the lead developers[1].
The project, met with resounding approval, soon gained a better UI and more features such as an overview of the performance of all sites, the ability to change your wallet, and a view of the current balance.