Google's new plan introduced Wednesday to track individual users' browser history to target ads was just the ticket for Democrat Rep. Rich Boucher, the newly-minted chairman of the House subcommittee on communications and the internet. The Virginia congressman said Thursday he's working on a bill that will put restrictions on how internet companies can collect, save, store, and share user information.

The advertising system, announced at the Official Google Blog on Wednesday, increases Google's level of advertising customization. The company's AdSense network (which generates the ads within Google Search, Gmail, and other Google properties) had already been selecting ads based on your current activity. For instance the ads placed next to your search results are directly linked to the subject or the matter you had looked up.

Now, however, the system will delve deeper, using data from the past in addition to the present. "Advertisers need an efficient way to reach those who are most interested in their products and services," says Susan Wojcicki, Google's VP of product management. "Publishers can generate more revenue when they connect advertisers to interested audiences."

Boucher and his staff weren't available for comment on Friday. However, Boucher told CNET last month that the model for his bill is likely to be the Consumer Privacy Protection Act. The CPPA was first proposed in 2002, but was not adopted.

The bill also required data-collection agencies to give consumers an opportunity to opt out of the sale or disclosure of personal information, and imposed a requirement for the drafting and implementation of an "information security policy" to protect confidential information.