To combat this, we have added several URLs to a black list that the StillAlive worker will never visit.
This list is currently:
http://secure.gaug.es/track.js https://secure.gaug.es/track.js https://ssl.google-analytics.com/ga.js http://www.google-analytics.com/ga.js http://ad.doubleclick.net http://partner.googleadservices.com http://api.mixpanel.com/site_media/js/api/mixpanel.js https://api.mixpanel.com/site_media/js/api/mixpanel.js http://api.mixpanel.com/site_media/js/api/mixpanel.2.js https://api.mixpanel.com/site_media/js/api/mixpanel.2.js
This list will obviously grow and as it does, this support document will be updated. If you have a URL that you do not want StillAlive following, please let us know and we can add it to the list.
Note, we will be adding several ad serving websites as well to prevent false impressions and reduce traffic costs.