I've participated in Inktober this year, with twenty eight out of thirty one days completed, which wasn't so bad for my first year. I looked into my own theme for the month, which was to look at character concept design based on fantasy style ideas. I posted each day on my Facebook and Twitter pages, with some positive feedback from both communities. If you go to either of those pages you can read descriptions and progress throughout the month.
It was positive for me because I got to try ink and colour washes again, which I hadn't done since university six years ago. It felt good to get loose and not worry about the idea so much and just let it flow along each day. With that in mind I plan to do Inktober again next year, with a little more planning on the theme.