As hinted earlier, Yahoo! announced today that they have reached a non-exclusive deal with Google around Search & Advertising. For more information read the Google Blog Post, Google Press Release and Yahoo! Press Release.
The TechCrunch Summary:
The deal is non-exclusive. Yahoo will be able to run Google ads alongside Yahoo ads or other ad providers. The deal is expected to add $800 million a year in revenues and $250 million to $450 million in operating cash flow. * The deal only applies to paid search and contextual ads, not to algorithmic search.