In large corporations, there are often webapps that depend on ie6's buggy behavior, and break with anything else. And it may not even be under the company's ow

In large corporations, there are often webapps that depend on ie6's buggy behavior, and break with anything else. And it may not even be under the company's own control --- I know of one SaaS player in the financial space that has a major bank pinned down to ie6, even though the bank would like to upgrade. Chrome Frame is one way out of these situations, but convincing IT that it's a good idea is a struggle at best.