Backtagging: Yes.
Threadhopping: Please ask! I'll almost always say yes, I'd just like a heads up.
Fourthwalling: If there's a good reason for it.
Offensive subjects: Fine by me.

Hugging this character: Yes.
Kissing this character: Yes.
Flirting with this character: Yes.
Fighting with this character: Yes.
Injuring this character: Yes, please! But he is a vampire and a little harder to injure, so lemme know if you want him to suffer horribly and we'll work it out so that it's plausible. :D
Killing this character: Open for discussion.
Using telepathy/mind reading abilities on this character: Yes.

Are you interested in having Damon compel your character? (Form of mind control -- it's strength can vary from mild to strong, so it's 100% flexible and totally up to you what you wanna do with it).
Are you up for volunteering your character to be munched on?: