@evan I'm reluctant to let a bot like this follow me, because it would also be able to see my followers only posts.
Now Evan, in this case you're my good buddy and you see those posts anyway; but I wouldn't want to leak them to a bot on principle. :)
What is *want* in an ideal world is the ability to distinguish types of subscriptions with access to subsets of my posts under my control, like the old Google+ Circles thing.
I see the network benefits of a bot like this for pushing public posts around to more servers, and I'd probably happily let it follow just my public posts.
(I trust *you* not to make an evil bot, but it won't always be you asking for these things, and even awesome people sometimes make security mistakes writing bots, or their tool gets taken over by someone else in the future that I might trust less.)