In April ’09, the average online American had 61 internet sessions, visited 108 domains, surfed 2,443 web pages and stayed on each page approximately 57 seconds, according to (pdf) monthly internet usage data from Nielsen Online.

These April numbers reflect one fewer monthly internet session than March data, as well as visits to three fewer domains and 111 fewer pages vs. March, in part because April is a shorter month.

Average time per page is up from 56 seconds per page in March, and 55 in January.

Nielsen Online provided overall online video usage data for April 2009, which shows that approximately 119 billion unique viewers watched seven trillion total streams during the month.