From the Times: market predicting tools on the Internet. The real estate one worries me that it may only make it more difficult for people to own their own homes as more investors decide to speculate on property values...

Airfares Made Easy (or Easier) - New York Times: "One such site introduced this year was Zillow.com, the real estate voyeur's guilty pleasure. It mines data in county land records to hazard a guess on the value of 65 million homes across the United States. The Seattle company says its 'Zestimate' is within 10 percent of the selling price of a home, though many users have noted that the inaccuracy of the public records distorts the price estimates. Nevertheless, it is popular. In May, it had 2.4 million visitors, according to comScore, making it the ninth-most-visited real estate site."