From a new Stanford economics working paper:
Only about 0.2% of consumer spending in the U.S. … went for Internet
access in 2004 yet time use data indicates that people spend around 10% of their
entire leisure time going online… Based on expenditure and time use data and our elasticity estimate,
we calculate that consumer surplus from the Internet may be around 2% of
full-income, or several thousand dollars per user.