How much work are you willing to do when using a facebook application?

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Some application needs a lot of work from you. For example application that allows you to write reviews, or perhaps to select movies from a list, or the grafitti application where you can draw on somebody's wall. My question is do you take the time to use the application. Or do you prefer applications that are just one click at a time. Obviously the examples above need work. You may spend minutes to write a good review, or draw something wonderful for your friends. The reason I'm asking is that I'm currently developing an application (http://apps.facebook.com/mapdaze) for facebook. It does require some work, not much, but some. In this application, you mark the locations (using a simple interface) of where you took your photos. once you've done that you can look through your photos by location (instead of by album), you can also send photos as postcard to other people. All I'm wondering is, is this too much work for an application user? Would people just prefer application where you have instant results?