The complexities of the mortgage mess the world is in has been made into a visual explanation. Many people understand complex topics and issues more clearly when they can see what is being explained. I do not know if this visual explanation provides any clarity as to what has happened, but it is a very interesting representation of the complexity of the problem. It also provides some understanding as to the difficulty that any intervention will be in the real estate market.
The site it is on is a commercial site focused on managing money. The link here in my blog is only to the graphic representation, however, because I though it was confusing enough without a lot of extra text and advertising around it. You can click here for the .jpg that is on the Mint.com blog. Or you can surf their blog to find it.
Happy Listing and Selling