More specifically, the patent describes "a method, apparatus, and program product are provided for identifying common interests between users of a communication network." One example of how it could work is "by calculating the ratio of the number of words in a content source to the time spent viewing the content."
The patent grab was discovered by SEO By The Sea blog and confirmed by Mashable . Google already purchased over 2,000 patents from IBM in 2011, as well as acquired Motorola Mobility for $12.5 billion, a move that was largely motivated by Motorola's more than 24,000 patents. Having all these patents gives Google a path to producing new products, but more importantly, will help fend off lawsuits against Android.