The US National Institute for Technology & Liberal Education (NITL)
BlogCensus at that time identified 655,631 'blogs', with a substantial
margin of error and a note that around 30% were 'inactive'. An
October 2003 report by Perseus Development on The Blogging
Iceberg claimed that
Based on the rapid growth rate demonstrated by the leading
services, Perseus expects the number of hosted blogs created to
exceed five million by the end of 2003 and to exceed ten million by
the end of 2004.