Library Clips points to Swiki, a new Rollyo-type service, & points up some of the differences. Looks like custom micro-searches are here to stay.... Definitely a useful tool for generating content in your chosen area of interest & expertise. Cool.
I will refrain from asking for a beta signup, since I have been less-than-effective as a tester for the couple of services that I signed up to mess with. It's a time thing.