Good tip, but be careful with the representative you get. Your account does have to qualify for retention in order to be transfered. If it doesn't qualify, the representative that you speak to won't be able to transfer you and will ultimately end up closing your account if you're not careful.
Some reps just don't care either, they won't all transfer you to retention even if you do qualify. Just a thought on my part working as a customer service rep in the industry.
S. Sonderegger
Credit Card Customer Care