Social bookmarking site Mixx is often compared and contrasted with the more popular Digg. While Mixx does not get the traffic that Digg does, it is often cited as a good alternative to the site.
Mixx has recently launched an interesting advertising tool called the Sifter in which advertisers can submit ads and have "elite" members of the Mixx community decide just how effective those ads are. Mixx CEO Chris McGill and another Mixx spokesperson discussed the Sifter with Murdok.