> What percentage of people who you auto-favorite follow you back and/or register for your service? What threshold do you consider appropriate.
It is greater than 50%. As I said, we do this in an extremely targeted way. We may only favorite 10 tweets in a day because the targeting we do is so specific. To be honest, I haven't thought about any particular threshold being appropriate/not.
> Do you have any visibility into the people who are annoyed by seeing your robot interaction in a place that they feel should be reserved for human interactions?
No, but I think you already knew that. This question sounds like your projecting your personal feelings quite a bit.
> How would you feel if every single service provider interested in finding you were to favorite all of your tweets to get your attention?
Personally, I wouldn't even notice it. I have all notifications turned off for that type of stuff. If anything, they'd be giving me more exposure to the people who may look at their account/favorites.