The question is whether this community might line up in support of hoping against hope that MSN AdCenter will eventually work with FireFox or any other (read: nearly every other) standards-compliant browser, and on operating systems other than Windows.
Not possible. Each port and every configuration and version of that browser has its own rules ... not the standards. At the risk of getting off-topic, check out the CSS forum (and many other resources, including MS documentation) for issues regarding anything having to do with margins and padding and nested structures that use them. Of course every professional in these threads tests to see what kind of funk IE is inflicting on their well-coded pages, however it is not necessary to use that security-hole-riddled product as one's primary browsing tool.
This thread (IMHO) is a plea for MS to work to the standards everyone else is using and to acknowledge that many professionals use products other than MS products (read: Mac, Linux).