Even big-brand retailers rely on search engines for traffic. About 12% of Wal-Mart.com (NYSE:WMT) traffic visited Google first, according to Hitwise.
But here's an interesting change and trend Tancer has spotted. Social networks, such as News Corp's (NASDAQ:NWS) MySpace, are starting to drive traffic to retailers. In fact, Tancer says that 5% of traffic to retailers comes from social networks, with MySpace accounting for 2.5% of that traffic.
Here's where retailers are getting their shopping traffic from, according to Hitwise's Tancer: