Thanks. Assuming this is a submission for inclusion in libs/PiwikTracker/, I'm deferring this one to Matt for review/feedback.

Great library! I think it is better to keep it on github and link it simply from the doc page: http://piwik.org/docs/tracking-api/

Benoit could you please add a complete example using your lib, tracking a pageview? I think it would help. Otherwise, what are the known limitations of the lib?

What functions are currently not implemented compared to the PHP tracking library? For example Custom Variables is not implemented yet (would be nice to have full list).

Could you add "How to contribute to PiwikTracker.as" in the README with email contacts and indication on the best way to submit a patch for example (since we will link from the piwik tracking page, hopefully there will be a few users finding and using it!! :)

What tests have been done on the function (for example did you test all ecommerce functions with real data?)

Keep up the good work!

If the library works please contact us to have it listed on http://piwik.org/integrate/

Thanks!