2) Is very tricky to do for creative professions. Wouldn't it mean something like asking every client who uses the feature you worked on to give you a quote on

2) Is very tricky to do for creative professions. Wouldn't it mean something like asking every client who uses the feature you worked on to give you a quote on how useful the part you did was to them? I'd like to hear what others think about how to effectively measure and market your contribution to management.