I am trying out a new search engine, atomz. It seems to return results more quickly than PicoSearch, but it returns fewer results. It has been installed on the Wharton Society and American literature pages. Both search features have ads, unfortunately, but that's the price for a free service. If anyone reading this wants to weigh in on which engine works better, please add a comment or email me at drcampbell6676 at yahoo dot com.
One reason for switching is that atomz will search long documents (such as the text of novels), and Picosearch will not.