Helpful, right? Check out this MediaPost piece if you want more on the survey, conducted by media-buying shop Round2 Communications.

The bigger picture: This week, as you’ll hear over and over again, is the one-year anniversary of the Lehman Brothers collapse. The BBC has both a radio drama and a made-for-TV movie commemorating/dramatizing the event.

Which means it’s the one-year anniversary of the economy’s collapse from recession to (short-lived) catastrophe. Which means this is the one-year anniversary of the collapse of the advertising business. Which means that any year-over-year results you see now had best show an increase because they’re going up against positively brutal comparisons from 12 months ago.

Remember: This ad drop was so bad that even Google (GOOG) flatlined for a bit.

So if and when you do see signs of a rebound, make sure you’re looking at them with some perspective: There’s just about nowhere to go but up. Right?

For instance, in 2002, Time Warner had to take a $54 billion write-down connected to its disastrous AOL deal. Today, the company has announced a $25 billion write-down, which is in part connected to… its disastrous AOL deal.

To be fair, most of that charge has nothing to do with AOL, but with problems in its cable business; spin-out company Time Warner Cable (TWC) announced a $15 billion write-down of its own. But while Time Warner doesn’t elaborate on the charges in its release–it just says they are “related to goodwill and identifiable intangible assets at the Cable, Publishing and AOL segments”–I’m told that some of the write-down does indeed relate to the original AOL deal from eight years ago.

Other problems at Time Warner aren’t of its own making: The company says it will also take a hit of $50 million to $60 million from a “restructuring of a lease for space in the Time & Life Building, held by a lessee who recently declared bankruptcy.” That tenant, I’m told, was Lehman Brothers.

In any case, as astonishing as these numbers look in print, they don’t have much to do with Time Warner’s performance as a company, in the present tense. But Time Warner had worrisome news on that front, too: “The economic environment has proved somewhat more challenging than the Company previously expected, particularly for the advertising businesses at the AOL and Publishing segments.” Sigh.