Whether it matters or not Microsoft (NASDAQ: MSFT), Yahoo! (NASDAQ: YHOO), and IACI's (NASD:IACI) Ask.com are all beginning programs to keep users search data private. Yahoo! actually plans to make (subscription required) all user search data anonymous within 13 months of collecting it.

Personal information can be used to improve the search results that are sent back to users. But, Ask and Microsoft are trying to band together with a number of companies and advocacy groups to set a coherent policy for keeping data on individual habits and data private.

Cynics might view the new enthusiasm for privacy two ways. The first is that it is a move by companies with a small share of the search market to pressure Google (NASDAQ: GOOG) to improve its privacy standards. This could hurt the accuracy of the company's search service by taking away key data that allow results to be more accurate.

The other take on the move is that protecting privacy data is much like building "green" cars. Critics and government agencies are becoming more interested in keeping the "Big Brother" aspect of search at bay. People's habits should be private and not part of a large black box that tracks their habits to serve more targeted marketing messages or collect information on who is not paying taxes.

The best solution is probably for people who don't want their data collected to avoid searching altogether. Personal data makes search results better. People can't ignore that.

Douglas A. McIntyre is a partner at 24/7 Wall St.