For me, google's wonder wheel is the best small secret kept by everybody's favorite and most loved search engine. Though compared to google's other tools, it is not really that visible but it still remained to be elusive despite the fact that it was only released a year ago. You can access wonder wheel by doing a search and choosing wonder wheel under the filter options placed at the left. Actually, I don't have much idea of this tool but it raised curiosity in me. Does anybody know more about this little secret of wonder wheel? Do you know of its features?