Following a Tweet link -- Custom Search Engines and Clipnotes

I followed one of Dennis' Tweets to this link:
http://mrgsclassroomreflections.wordpress.com/2009/11/19/trying-to-reinvent-the-wheel/

It's a blog post by a teacher of students with learning disabilities and emotional behavioral disabilities, who has experimented with creating a custom search engine, and using some tools that allow you to clip and present short bits of text, for his students because their own "filters" aren't that good due to their disabilities. I wonder whether these tools would also be good for elementary aged students, since their judgement also isn't always that good (due simply to their ages).