Real estate search sites hit data control sore spot

Industry has mixed reaction to display of property listings

The Propsmart.com Web site carries the slogan, “real estate search + community”; Trulia.com‘s logo includes the phrase “real estate search”; and Oodle.com is “the search engine for local classifieds.”

All three sites conduct automated searches for online real estate listings hosted at other Web sites, a technique known as crawling or “spidering,” and then collect, reformat and republish parts of that gathered information at their own