This is probably too late for most of you to act upon it, but credit line increases are much easier to come by through AMEX than Citi. My Costco AMEX got approved @$5k initially, and in two months, I had it bumped to $20k through the online interface, no hard pulls.

Citi took the whole credit line @ $20k, and I plan on opening another AMEX shortly thereafter and bump that back to $20k.

Rumors are max exposure on all credit AMEX likes to see without income verification is $25k, so I kept a little under it.