I got an e-mail today from the RedLightGreen team at RLG. RedLightGreen provided inspiration and set the bar in many respects long before anyone had uttered the words “next generation catalog.” The much-lauded interface to the research union catalog is fading away in the wake of the OCLC RLG merger. Fortunately, this is not as much a deprecation as it is a passing of the baton to WorldCat.org, which launched in beta status last month. WorldCat includes both the faceted navigation and “Editions” feature (tying like titles together into a single record display) made popular by RedLightGreen. The second mouse …