http://wiki.netbeans.org/UsageLoggingSpecification is pretty cumbersome - a lot of things to copy and paste, with no
easy way to tell if you are doing it right. Would much prefer to have an API class somewhere (preferably in platform
cluster so it can be used even from e.g. org.openide.text.Installer) which would have a method like

public static void logUsage(String subcategory, String key, Class caller, Object... params);

where subcategory would be an optional sublogger name within org.netbeans.ui.metrics (is this really used for
anything??), key would be the usual log record message (would be forced to start with "USG_"), caller would be used to
locate a Bundle.properties (or could we just hardcode nonlocalized strings?), and params would be the data of interest.

Also suggest a helper method to cluster larger numeric values into buckets, e.g.

    private static String someOrMany(int count) {
        if (count < 10) {
            return Integer.toString(count);
        } else {
            return "~e^" + Math.round(Math.log(count));
        }
    }