Microsoft has agreed to buy Silicon Valley-based semantic search engine Powerset for over $100 million, VentureBeat is reporting today, a move that will apparently be announced next month. Powerset’s search technology uses the open-source, cluster-based technology Hadoop, which provides fast answers to queries by using the resources of many computers. And of course, Microsoft has been very focused on shoring up its search offerings. For more, head over to OStatic.