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Read what ama and winalot wrote in this thread:
LINK
I think it covers this spot very well.
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You lead here becuase you're OOP. Against a villian with half a brain, if you check this I know right away that you have KK, QQ, or JJ. You're losing complete control of the pot by checking this. If you're in position no problem with a check since you're probably going to get marginal hands to call on the turn. OOP, though, you have to call down in a very uncomfortable spot.