Perseus Development Corp has randomly surveyed 3,634 blogs on eight blog-hosting services (Blog-City, BlogSpot, Diaryland, LiveJournal, Pitas, TypePad, Weblogger and Xanga) and strangely come to the conclusion that 4.12 million blogs have been created and that 2.72 million blogs that have been either permanently or temporarily abandoned. So on the basis of 0.09% of Blogs on what are essentially free or low-cost, low setup servers, 66% of all weblogs on the web are kaput!. Perseus says its margin of error is 2.85%, based on what?
Whilst we are not statistical geniuses, there are many examples of polls based on supposed random sample data that have been far off the mark, some of the Election Polls in the US predicting a Democrat landslide in 2000, polls in Australia predicting Labor victories in 2001, the list can go on and on. The Blog Herald believes that the small sampling, restricted to blog hosting companies, should be taken with the grain of salt it deserves. Whilst not doubt that abandonment rates are high, and teenage girls make a large section of bloggers, such a small and narrow band of analysis does not make a true picture of blogging.
For those wishing to read the report: http://www.perseus.com/blogsurvey/