My cocktail title at 37signals is "Product Manager," so whatever experiments are going on with management aren't completely past tense. I do UI design, work with the programmers, help design and dev work together and contribute strategy ideas to the partners.

Despite the cocktail title, there still isn't a clear "path of authority" or anything like that. The buck stops at the partners, and the rest of us function like a meritocracy. The ones with a track record or expertise on a given topic have a respected voice, and there is always opportunity for expertise to shift or widen over time. It's that fuzzy-edged quality to the role that makes it feel experimental for me.