People are confirming a major traffic drop with Google Hummingbird Algorithm from past one month. This major update was not known to many online marketers and SEO firms, until Google announced it themselves on September 27th 2013.
Though this update was a complete internal change, Google still surprised many people saying that it affected 90% of searches worldwide. A Forbes report state that the update has been around a couple of months back!
However, there is nothing to worry about these regular Google updates and penalties, because what they are doing is absolutely right from a user perspective.
Google will now provide the most accurate and precise search results to their users, whose challenge is to find the best answer for their requested query. The user can ask anything from local shopping mall to meeting a friend, the search engine should be able to search the results semantically, and give the best result in less than half a second.