Originally Posted By: Bill S.
For whom? People who write a lot of rambling posts.

I thought maybe you were speaking to someone in particular, rather than making a generalized statement.
Originally Posted By: Bill S.
For what? To write many rambling posts. Who would do that if there were no incentive?
Incentive or inspiration? Perhaps the incentive is to respond to someone who comments on rambling posts, leading the inspired to think that someone has taken an interest, or is a listener of rambling posts.

I was addicted to the Hokey Pokey, but then I turned myself around!!