It would be interesting to know how much people are using the app.

Some ideas:

* Successful compiles

• Error compiles

You can track arbitrary events using Google Analytics. Here is an example:

<a href="#" onClick="_gaq.push(['_trackEvent', 'Videos', 'Play', 'Baby's First Birthday']);">Play</a>

So, you'll need to execute some JavaScript from your Dart code.

Here are the full docs: https://developers.google.com/analytics/devguides/collection/gajs/eventTrackerGuide

_trackEvent(category, action, opt_label, opt_value, opt_noninteraction)

category (required)
The name you supply for the group of objects you want to track.

action (required)
A string that is uniquely paired with each category, and commonly used to define the type of user interaction for the web object.

label (optional)
An optional string to provide additional dimensions to the event data.

value (optional)
An integer that you can use to provide numerical data about the user event.

non-interaction (optional)
A boolean that when set to true, indicates that the event hit will not be used in bounce-rate calculation.

Here's a suggestion:

category: usage
action: compile_yes

category: usage
action: compile_no

Another example would be to track compile times.

category: metrics
action: compile_time
label: <num lines of code, in course-grained increments like 1-20, 21-40, etc>
value: milliseconds