Rollyo is one of the things that I had never heard of or even imagined. The ability to make your own custom search engine is a phenomenal thing for teachers and librarians. It provides a way to help keep students on track and make their searching more efficient. In my district we have NeTrekker, which helps a lot in that aspect as students and teachers are only searching educationally appropriate sites, but this fine tunes that idea even more. I can see many possible uses for sharing your search rolls. Rather than me emailing out a list of links about upcoming holidays, I could make a search roll and send that out or just make it available to teachers in my wiki! Here again I find so many things I want to do, but so little time to do them. This experience with all these great tools will get me to using some of them!