In general though, assuming there is some bond between you and the person that follows 100 people and the 10,000 people that follow him in turn contain some real live bodies that are in the right demographic he/she will be a useful follower.
Personally I have not seen much action on twitter from people with 10's of thousands of followers, they are usually fairly reluctant to re-tweet unless it suits them perfectly, exactly because of their large following, and also because people with that many followers usually have those for their own glorification and not specifically as a tool to communicate with people with who they have a strong (2 way) bond.
I suspect the demographic of their followers isn't hugely useful for "sticky" readers.
You chose themes that your chosen population was already very susceptible to passing on.
[1] http://www.fastcompany.com/magazine/122/is-the-tipping-point...