One of the nicest feelings in the world is getting something for free. Especially when it really helps you out and it's valuable.
At the small cost of giving up a little bit of data, to one of the world's biggest data collectors, you can see how users use your FileMaker solution and what they do.
In fact, what you collect, and how, is totally up to you. You can control pretty much anything in terms of what you transfer to Google Analytics.