Rollyo...roll on the search engine

A useful programme to refine a specific search on a number of topics. I (of course) used it to create a Black Hole search roll. It is easy to use and user friendly. I found it does get jammed however at certain times of the day and won't connect which is a bit annoying. (it may be just my connection??) Anyway great for helping students with any kind of inquiry based learning that requires research instead of using the usual Google search.