Others denied using the data to "blacklist" troublesome workers covertly, or said they had stopped buying the data.
He and Mr. Temkin are interested in using the data to explore the way new ideas and designs spread through an instrument population.
This, however, brings with it a responsibility from advertisers and media agencies – we must ensure that we're using the data to deliver better, more interesting and relevant advertising.
Mr. Rodriguez and the Democratic staff of the House committee said they were not using the data to embarrass Mr. Bush.
But the spy agency is using the data to analyze calling patterns in an effort to detect terrorist activity, sources said in separate interviews.
Privacy advocates say the companies are also using the data to compile behavioral profiles on users, which are then used to target advertising, the main source of revenue.
He said virtually all the countries he visited were receptive to using the data to help identify militants and stem their flight to Iraq.
Scientists at Arizona State University are using the data to analyze the layout of 100 cities to see whether they have concentrated downtowns or sprawl.
Computer experts are using the data to try, for the first time, to profile millions of voters, to figure out if they are worth contacting.
The Massachusetts Highway Department, the report says, was formally prohibited from using the data to offer highway message board estimates to Boston-area commuters on traffic delays.
The TRAC report seemed to anticipate the political stakes and cautioned against using the data to remove judicial discretion.
