Google and Twitter, earlier partnered to bring tweets into mobile search results. It was, and is, a pretty big deal for both companies. The relationship is apparently going well, as Google announced in a short update on its original blog post that it’d be including tweets within search results on desktop as well. This means more tweets surfacing in your PC, which is great for Twitter. If someone were to come across a tweet and feel like they want to jump into the conversation, they can do that which inturn increases usage of twitter.
While Google helps you search for things and Twitter/Tweets help you find what people are saying about things. Strong rumors have always been swirled about the search giant acquiring Twitter.