Lately, I've been on a search engine spree (view post on recipe search engine). It’s just that more than ever, search engines -- or more generally, information aggregators -- have been popping up everywhere, and more than ever they are able to provide useful results.

My latest discovery is Viewscore, an Israeli start-up that aggregates gadget reviews from the entire web. On their site you can search for gadgets, rank them and, most importantly, compare them.

I can start my search by either selecting a category, or (if I already know the name of the product I am looking for) by typing its name into the search field. Once I am presented with the results, I can quickly scan for the highest rated product and then compare prices, or I have the option to save different products into the My saved list, which allows me to compare them side by side anytime I want.

So far so good, this isn’t really anything new, but what distinguishes Viewscore from other product comparison engines is its underlying technology that is able to normalize numeric ratings across sites that use different rating systems; moreover, by semantically analyzing written reviews, it is able to determine a numeric rating.