Perhaps this topic has already been discussed somewhere at length. If so just direct me.

I've heard of 'Defending Your Blind' as a general concept, but am not sure I really grasp it.

When you're in the blind, you already have some money at stake in the pot, and do not want someone in late position to steal that money, that much I understand. But if someone in EPosition raises, even a little, and gets two other callers, should you really relax your starting requirements at all? I'm talking about a ring game mostly. You're going to be out of posion through the rest of the hand, and I don't like to get too involved from EP without a premium hand.

In a tournament where the blinds have increased to a substantial amount, defending it makes more sense, especially against a button raise.

I'd like to hear your imput on the CONCEPT of defending your blind, and if Big/Little makes a difference.