Google has been on another round of purchases lately. They've snapped up the popular identity verification service reCAPTCHA, and there are rumors that they're looking to acquire the Brightcove video service as well.
Both are interesting moves. Google's reason for their acquisition of reCAPTCHA was not neccessarily as a security service, but apparently the software uses advanced scanning to take those words from old newspapers and books and make them readable to the services' computers. This is an effort to increase the viability of their Google Books project. Acquiring Brightcove is an interesting parallel to their acquisition of YouTube in 2006. The video service is popular among major news sites and this could shore up Google's dominance of online video.
There's a lot of promise here for these companies to expand their business. Google's proven record of acquiring companies and letting them continue to do what they do best has paid off. I'm excited to see these services helping Google's own projects as well.