I came across this site carzen dot com. Its a very very well done site. Basically they ask you a bunch of questions, starting from your budget to size of car, accessories etc etc. Based on your answers, they give you a set of results with the closest matching result at the top. Simple concept, right? Its beautifully executed.

Anybody know of similar site, for other products? I searched and came across moneysupermarket, which has HUGE verticals like insurance, travel etc. Please post if you know of any similar sites.

IF data feeds are available, it shouldn't be difficult to do such a site, for a narrow niche, for example, smartphones or digital cameras.