I learned on Ted Serbinski that Scott Reynolds, who implements the Slope One Collaborative Filtering algorithm in Drupal, is being paid by Google. It is one of 14 projects that Google decided to fund. Way to go Google!
Google funding the implementation of Slope One in Drupal
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Shjould be noted that Google is funding 640 projects (or around that number). Drupal recieved 14 projects. I was one of the few.
There were over 6k applicants.