The average day counter thing isn't very accurate.
It counts every day, even when you are offline.
It's a running average. It's your total time since account creation, divided by your total posts.
I registered on 05 September 2008, which makes my account 2791 days old. I have 14,723 posts.
14723/2791=5.275170, and my profile reads it as 5.275.
I probably post slightly more than 5 times a day, as of the past couple of years. For a long time I had an average post rate of 3-4, and have upped to 5.275 in about a year or 2.
