Just when we think the big search engines (Bing, Google…maybe even Wolphram Alpha and Mahalo) have the market cornered, someone thinks up a new approach.  That’s startup NowRelevant is all NowRelevantabout.  Basically, the site, which just came out of beta, links to the Internet Time Machine search directory, allowing information about a subject to be searched for the past 14 days.  It is certainly a niche product, but no doubt useful.  Because it’s so central to the functionality of the Internet, search just may be one of those products that never ceases to lead to innovation.  Here’s more about NowRelevant.