Some of the Best Twitter Apps Are Made by Google

First, Replay. Twitter's already integrated with Google search, but that only nets you real-time results. What if you want to read chatter during the last State of the Union address, or right after Shaun White nailed that Double McTwist 1260 in Vancouver? Replay lets you zoom back to any day and any time to find out what people were Tweeting about--think of it as a Wayback Machine for Twitter. You'll see a chart showing the frequency of Tweets on the subject you searched over time. To use...