I’d definitely agree that you should try to highlight what specific need of the user skimbit is the solution for. The average user needs to be told explicitly (and quickly) why they should invest time in using your service. Don’t give people too many choices – we get scared :-p

On the other hand, however, it is fantastic that your users are taking your product and using it in unexpected ways… and what you might find down the line is that one of these uses is more interesting and compelling than anything you ever considered.

I’d just suggest listening to your users (which you do) and let them tell you how they use the product.. possibly at some point you might see several different versions of skimbit with functionality tailored to different niches.