Blog founded - 9/4/2007
100th post - 1/1/2009
Interval between blog founding and 100th post: approx. 1 year, 5 months
200th post - 9/20/2010
Interval between 100th post and 200th post: approx. 1 year, 9 2/3 months
300th post - 6/30/2012
Interval between 200th post and 300th post: approx. 1 year, 9 months
Amazing. I was sure I was getting slower, was taking longer to write fewer posts. Looks like that's not really the case, though.