NexTag's original business model was an online negotiation site allowing consumers to name their own price for computer and electronics products.
NexTag abandoned this model in 2000 and focused on comparison shopping. NexTag pioneered the concept of calculating total price by using a zip code to compute tax and shipping charges, in addition to the product price (what NexTag calls TruePrice).
NexTag was the top advertiser with 8.56 million impressions generated, passing usual No. 1 Experian Group Limited at 7.4 million. http://www.medialifemagazine.com/artman/publish/article_11302.asp