Just wanted to let everyone know that Chase gave me an auto-CLI from $12,500 to $15,000. I honestly didn't know until I logged in today and saw it. It should be noted that my highest other CL is $15,000 with Alliant, so chase may be matching theirs. This is the 4th auto-cli in my 6 years of having the card (started at $6,000).
Now just gotta decide if I wanna request the increase from Amex. Button has been back for over a month... at $12,500 currently. Any suggestions on what I should request?
Starting Score: 627 EQ, 621 TU - 11/15/08
Make it a cool $20,000 
Got scared... did $18,000, instantly approved. Yay.
Freedom. Has never been a pattern on the CLI..usually 12-18 months apart. All CLIs requested by the consumer are hard pulls by chase; auto CLIs are not.
For AMEX - I always use the online automated system. Prompts me every 6 months when eligible. Never a hard pull - just ask how much you want and your income. My balance when requesting a CLI has always been <10%, usually $0.00.
As for CHASE - I actually have carried large balances with them for long periods in the past. At one point, after a consolidation, I had $8,000 out of $9,500. Over time that got paid off. Currently, I have a $2,200 balance. They have always given me my increases while carrying a balance suprisingly.
Overall util was 10% (now 9% because of the changes). EQ FICO as of today is 740.