I've been using Keepoint for couple of months and I have to say it is one of the best web research tool I have ever used in my life. I really could have used it 6 months ago when I was writing a research paper, when I highly required it.
It's an easy way to just save and organize web page.
Earlier I am afrid of saving number of web pages because it get cluttered but now Keepoint takes care of all very well.
It has many more advance feature built in it.. altogether it makes a better web research engine which really takes me beyond search engine.