September 2015 has been one wonderful experience for us in the Blogging Marathon group. If you are landing here for the first time, then let me take a moment to explain that we in the Blogging Marathon, do a monthly and a biyearly full month Marathon.
All the BM editions are based on themes. Even the Mega BMs have a theme going on.
We have been doing the Mega Blogging Marathon since April 2013,
April 2013 was weekly themes.