(If you search with the words like " IBM Vivisimo Yippy 10%", you 'll find tons of related articles. here is the one example.Good luck! I hope you are not kidding me. )
Vivisimo's Velocity search system has long been admired in the search industry for its clustering algorithm and capability. The Velocity search system was acquired by Yippy in May 2010 from Vivisimo, Inc. Vivisimo itself was acquired by IBM earlier this year. As part of the purchase, Yippy acquired from Vivisimo-IBM transferable, unlimited lifetime perpetual license for Velocity for Web-based search applications. Velocity is an extremely capable enterprise search software solution with patented clustering methods. IBM currently holds a 10% stake in Yippy. The combination of Velocity and MuseGlobal's connector technology make Yippy-MuseGlobal well positioned to take advantage of the emerging market for unified information access solutions.