Rick Boucher

The Web sites computer users visit, the search queries they conduct and the products they buy -- along with all the personal details they reveal on social networking pages -- can give companies insight into what Internet ads they might be interested in seeing.

But privacy watchdogs warn that too many people have no idea that Internet marketers are tracking their online habits and then mining that data to serve up targeted pitches -- a practice known as behavioral advertising.

The impetus to regulate online marketing may be gathering steam. On June 18 a House of Representatives subcommittee held a hearing to take a closer look at how advertisers gather and use information on consumers' Web-surfing habits.

At a hearing of the House Energy and Commerce Internet subcommittee Thursday, Congress began the tricky business of trying to understand Internet privacy issues and launched another round of debates about legislation regulating the collection and handling of personal data online.

In the wake of news that Google is introducing behavioral targeting of advertisements, a Democratic congressman from Virginia is renewing his suggestion that new consumer-protection legislation may be needed to rein in data collection.

Rep. Rick Boucher (D-Va.) said he is working with Rep. Cliff Stearns (R-Fla.) and Rep. Joe Barton (R-Texas), to craft a bill to require online companies to notify consumers of tracking activity. All three congressmen are members of the Internet subcommittee in the House Energy and Commerce Committee, which Boucher chairs.

A Recycled Proposal