Blekko.com redirect virus. How to get rid of it

This evening my Google Chrome browser was attacked by blekko.com redirection. Instead of a common google.com address bar I suddenly saw this blekko.com/ws, which I surely found very annoying. Personally, I didn't take part in the installation process of this redirecting software. Thus, it appeared on my PC without my consent or approval. I think that this is the way some guys online want to attract traffic to the online information about their goods or serviced. Such goods and serviced are advertised via blekko.com start page, and I believe that this is not a fair way of doing business. Why do I think so? Because the blekko.com redirect doesn't ask for my opinion on such issues and self-installs itself without my approval. So, obviously, I need a correct solution on how to clear my Google Chrome browser from this annoying add-on.