100 Days

The average life span of a Web site is about 100 days, so you have to be proactive about getting and saving them,” said Brewster Kahle, who founded the nonprofit Internet Archive and began sculpting his vision of a working Internet library in 1996.
—“Trying to Preserve Today's Web for Future Generations,” The Seattle Times, April 7, 2008, available from: http://seattletimes.nwsource.com/html/businesstechnology/2004331910_btnetpreserve07.html.