Computer hackers plan to take the internet beyond the reach of censors by putting their own communication satellites into orbit.

Life is about to become more difficult for countries trying to censor access to foreign websites. A system dubbed Collage will allow users in these countries to download stories from blocked sites while visiting seemingly uncontroversial sites such as Flickr.

In the not-so-distant past, satellite imagery was restricted to United States government use. Now it's fair game for anyone: News media and individuals may purchase low-cost commercial satellite images. But many fear that, to guard what it views as sensitive information, the government will begin to exercise "shutter control."

Transcript of a Lehrer News Hour background on the U.S. policy of censoring satellite imagery or "shutter control".

Government agencies have tried to remove sensitive information, only to discover that copies have proliferated and they're virtually impossible to eradicate.