@vforge and @lukaszkonieczny did this change break something?  According to the comment here, https://github.com/Wikia/app/blob/dev/resources/wikia/modules/tracker.js#L316-L318 adding href to the params was a hack that should be avoided and mousedown should be used instead.  I tested this in all supported browsers and it worked.  Can you please point me to a place where it doesn't work?  Thanks. 

p.s. I will talk to @kflorence about updating the docs here: https://github.com/Wikia/app/blob/dev/resources/wikia/modules/tracker.js#L218-L219