While I have a lot of customers and what I'd call "clients," I am very selective about who I get to know and allow to be my sub or slave. If I am going to spend any significant time with a boy, whether it be in real time or chat or voice/cam, I need to feel an actual connection with him. And it sometimes seems that a genuinely good connection is hard to find. No matter how much a boy tributes me, if I am not feeling it I won't be interested in spending time with him. And I really don't do anything I am not interested in.
Anyways, onto what I look for. I'll just focus on positive qualities.
1. Connection. You know, ability to converse on a similar level.
2. Intellect. (and for distance training, this includes the ability to spell correctly)
3. Sense of humor. If you can make me laugh, you're in.
4. Desire to serve. If you want to be my sub or slave, you have to be more than a "fetishist."
5. Similar fetishes. (kind of goes along with connection)
6. Sacrifice. No, it's not all about money. It's about what you are willing to do do make me happy.
7. Adoration. You have to be crazy about me. I love the ego boost

8. Consistency. Big one.
9. Honesty.
10. Open-mindedness.
How about anyone else? What top qualities do you look for in a sub. Or, if you are a sub reading this, what qualities do you look for in a Domme?