1) In what situations to you do it?
2) Do you open up your re-raise range, call range, or both?
3) Do you do it from the SB, BB or both?

When I'm in the BB, it's folded to the CO or button and they raise, I generally open up my re-raise range to include more PPs, AK & AQ. I open up my calling range to include Ax, KT+, QT+, but not drawing hands like SCs that I don't want to play OOP. I don't if this is a good strategy, so I'd love to read other opinions. If there are any good articles or posts out there about blind defense at NL ring, please tell me about them.