Eli Pariser – a senior fellow at the Roosevelt Institute and former executive director of MoveOn.org, said the Facebooks and Googles of the internet are tweaking their algorithms to personalize user experience, filtering content that shows us only what it thinks we want to see rather than all we can — and should. His new book The Filter Bubble: What the Internet Is Hiding from You is set for release May 12, 2011. In it, he asks how modern search tools — the filter by which many of see the wider world — are getting better and better and screening the wider world from us, by returning only the search results it “thinks” we want to see.