Blog search engine Technorati has just released its annual State of the Blogosphere report and, if the figures are correct, the number of blogs is still growing. In fact, the blogosphere has almost doubled in a year.
According to the report, Technorati has indexed 133m blogs since the company started in 2002. The same figure in last year's report was just 70m, which suggests some impressive growth. Can it be so?
Size of the blogosphere
The numbers are impressive; between 2006 and 2007, the number of blogs indexed grew from 57m to 70m, so where have these extra 63m blogs come from?
This is not made clear in the report but, as the report states, just 1.5m of these blogs were updated in the last seven days, which suggests that the vast majority of these 133m blogs are inactive (by that measure).
According to Technorati, only 5m of these blogs are 'active', defined as having posted in the space of a month. There are plenty of discarded blogs out there.
Profits from blogging
According to the report, the average annual revenue for a blogger from advertising is $6,000 (around £4,200), while for blogs with more than 100,000 unique visitors per month, the figure is $75,000 (£40,400).
The second figure seems to be high, as Fred Wilson pointed out on his blog. According to Fred, he receives $30,000 (£16,100) per year from roughly 150,000 uniques, so where has Technorati got this figure?
The answer may lie in the sample for the survey: Technorati emailed a sample of its registered users, receiving 1,290 responses. Perhaps all the wealthly bloggers replied? Or perhaps the sample is too small to make such a generalisation about revenue.
Or perhaps the clue is in the 100,000 users or more. It could be that may of the respondents may be receiving much more traffic than that, which would skew the figures. Whatever the reason, Technorati could have made this clearer.
The report also has a few stats on the demographic profiles of bloggers:
The stats are interesting, but it would be useful if Technorati would provide some more detail and background so we can do a better job of understanding and interpreting them.
This time around, Technorati has split its blogosphere report into five parts, with more to follow on blogging for profit and the blogging efforts of brands. Perhaps more detail will follow.