1) What age, gender, and nationality are you?
25 (as of October 30), male, (United States of) American.
2) What other culture(s) or subculture(s) do you associate yourself with?
I'm a pretty heavy gamer and a big anime fan.
3) What do you think defines someone as a brony?
Teenage or older male who willingly watches and enjoys My Little Pony: Friendship is Magic
4) How did you first hear about the show?
I think it was the references on Halolz, followed by the mentions on the Escapist.
5) Why do you like the show?
It's well-written, solidly acted and has solid and likeable characters. The animation's nice to look at and there's some VERY catchy music. I'm also impressed with some of the lessons that they incorporate - the Cutie Mark Crusaders and their puberty metaphor is a particularly notable one that might help undo some of the damage caused by oversexualized media.
6) Do you actively try to get people to like the show or "convert them" to bronyism?
Not forcefully. I do like to share it when I can do so without getting beaten to death. Never anything more than "Here, watch the first 3 episodes of this. Yes, I know what it looks like. If you make it through episode 3 and never want to see it again, I won't mention it any more."
7) What are some of the stereotypes about bronies that you hear? Are they based on truth or outright lies?
"Bronies are obsessive, incorporate MLP into everything they do or say, are stuck in a childlike mindset, are just pretending to like the show, and/or will eventually grow out of it." Like all stereotypes, there are facets of truth to it - the whole Brony movement sort of got started with people being really obnoxious about it on some #chan, and I'm sure there are some posers out there who don't really watch the show and just want to be part of this new "alternative crowd." Like all stereotypes, there are also exceptions, and there are plenty of Bronies who prefer just not to call attention to themselves when possible.
The claim that most or all Bronies are pedophiles is a patently ridiculous one which really shouldn't be bandied about as often as it is.
8) Do you like the brony community? Why/Why not?
I'm not very involved with the at-large (online) Brony community: nothing against it, I'm just too lazy to bother. I do like some of the ideas they come up with though, like the overanalysis of the show (racial and class divisions between the different kinds of ponies, the notion that there are so few male characters because Equestria is at war, and even gross stuff like the whole "Cupcakes" thing.)
9) What is the most important aspect or trait of Brony culture?
Love and tolerance. I mean REAL love and tolerance. While there are those whose claims that the show changed their lives are exaggerated or hyperbolic, there are also people who really have learned important things from the show, whose lives are tangibly better for its presence. The fact that a lot of Bronies must overcome social stigmas to even watch the show, let alone admit it, can be positive: when they realize that the expectations of what adult males can/should like are not necessarily accurate or important, they might also reexamine other arbitrary social regulations.
10) Rate how big your fandom for the show is on a scale from 1 to 5 with 5 being the largest.
3.5. I watch it, enjoy it, and discuss it frequently with my Brony friends, but I don't usually bring it up in conversation unprovoked and I definitely don't paper my online interactions with it.