If nobody's lending money any more, then whence all these come-ons for credit cards?
Perhaps you don't understand this, so I will elaborate.
Companies like Visa make money from card fees, and with promotional acts like they do with BlockBuster. Blockbuster is trying to get people to rent movies, sales are one method, offering credit is another. All of this is balanced against all the news coming out about how credit card defaults are shooting up alarmingly. One can assume that Visa will be using rather heightened criteria for lending.
In contrast, revolving loans for business are coming from banks. The first story I linked goes into this in great detail. But, basically, businesses negotiate a line of credit that they can draw against. It's typically for short term stuff to ease the flow of business - make payroll friday because we aren't getting paid for that big contract until the end of the month, order new supplies to start a new product line, that sort of thing. Just about any business of consequence has something like this set up, and they only draw on a portion of the credit, because they negoiated for worst case scenerios. So, in typical times, a bank might expect 20% of that credit (I completely made that number up) to be drawn.
But now, everyone is in a worse case scenerio. Revenues are down, and companies are drawing on their credit lines to just survive, hoping that sales will pick up and they will be able to pay the credit down in the future. In the meantime, they need to either make payroll, or lay people off. Laying people off can destroy the company just as effectively, so it's not a hard decision for many scenerios - you draw down on your revolver.
Ordinarily, banks can withstand that sort of thing, because it only happens to the occasional business. But now tons of businesses are drawing down on them, there is extreme fear that the companies that haven't done so will do so. The bank can quickly become insolvent, and thus fail, in that environment. So they are retracting this credit. A lot of stock prices of perfectly good businesses are falling to the floor not because people are stupid, but there is a real risk the banks will change the credit situation, forcing the company into bankrupcy.
Normally a bank facing an issue like this will just borrow from another bank, but this is a global phenomenon. I've linked Iceland, you can read about UK banks, Russian banks, etc., on your own dime (google search). They are all facing the same thing, or worse, and are not in the position to lend when they are facing their own crisis.
This has rippled into Wall Street. (ripple is such an understatement). Companies are trading for pennies on the dollar, and are ripe for takeovers. But, no one can get money to perform the takeovers, so the extremely low prices persist. A big fear of stockholders like myself is that somebody will get deal money before prices rebound, and our companies will be taken over for far below the fair price. As one example, I offer you the story about Buffett offering to buy Constellation. He made them an offer they couldn't refuse - way below the fair price, but they needed money. I got burned recently with an energy company that I owned - I bought at a low price, it dropped some more, and a company that actually had some cash came in with a hostile bid. There's a huge fight going on over it right now. It was one of the few cases where I bought LEAPS instead of stocks, and I basically got burned out of all my money. Lesson learned there.
None of this means there is no money at all. These institutions make money from credit, after all, so they have to lend if they want income. If you have great credit you can get a mortgage, a new credit card. Retailers are between a rock and a hard place - extend credit to get inventory moving, vs the risk the credit will never be paid back. Still, this sort of thing is being done.
This is a huge, huge, huge problem. Is there light at the end of tunnel? Sure. Are we more liquid than in October? Probably. Is it still a crisis? Absolutely! Is it a bigger problem (problem, not recession) than the 70s or 80s? Yes. Yes. Yes. The recession is just another annoyance tacked on top of all these other problems.