So, I'm sorta following a policy of only accepting friend invites from people that I think are actually my friends (have a close enough relationship with me, actually see me outside of school (and a lot of people outside of school request me), etc...

Is this a bad policy? Am I taking it too seriously? Will I seem unfriendly?

If you start accepting requests from random people it kinda defeats the purpose of having a list of friends anyway. Instead of having one place you can go to keep in touch with friends you know, it becomes an incredibly long list of completely random people.

I say stick with the current policy.

No, that's a good thing. Why add people if they'll just clutter up your homepage with status updates you don't care about? Plus, if you don't know each other well, I doubt they'd care if you refuse; they just want to increase their friend count.

That's my view, anyway.

i only add people who meet these 2 criteria:

1. I Know Them
2. They Are Nice People

That used to be my policy, then I discovered mobwars...Now I just hide the feeds from people who are not my friends.

I only add people I know, it's a good policy.

Only add people you know!

Depends. If you're going to see those people often, then you might seem rude. If you're never going to see them again, then it doesn't really matter. Me personally I don't care so much. I pretty much just accept whoever adds me. I figure if they went through the "effort" to add me, they must think we're friends, or think of me positively.

Most of my "friends" are people I know through work (Canadian Army). Considering I see most of them pretty often, I never really figured out the point of facebook, and abandoned it.

Well, I have to at least know them in some sort of way. I don't accept requests from total strangers.