I was just skimming through the Windows Vista User Experience Guidelines and while in the Design Principles section I came upon this title, and I just had to laugh:
There is a point where marketing ceases to be marketing and becomes information; relevant, valuable information. There’s also a point where something, truly informational becomes marketing. Branding folks like to say that any interaction with your product defines your brand. Whether you are working on marketing or strictly informational stuff, it’s important to pause and ask yourself, “What does this say about me?” Sometimes, it’s that simple human question that’s enough to help you know when you need to work a little harder to remove a subtitle.