If you have a moment you need to take a look at Credit Card Line Reductions and Eliminations on the Credit Slips blog.
Thank you Adam Levitin for posting this information.
In the coming months and years we are likely to hear the banking industry and its supporters blame the Credit CARD Act for reductions in consumer credit availability. That might end up being the case, but we should be skeptical of the claim (and of the magnitude asserted) until we see some data that supports such a finding.

it’s the beginning of an end
we’re going to see easy credit comes to an ending
and the start of annual fee for credit cards to compensate the issuers loss of income