Google reader reporting subscribers

I recently noticed that the number of readers of my blog’s rss feed doubled. I did not write a ‘very popular’ post so I was surprised to see the big jump in the number of subscribers. Then I remembered the piece of news I remembered reading on on the the feeds I read on Google reader. GR (Google reader?) is reporting ’subscriber numbers’ in their logs. If there are people subscribed to your feed using GR; then feed reporting services (such as Feedburner) can report those numbers. That explains the 40 rss subscribers that I have got now.