This issue raised here is nothing new or specific to Twitter. (Not that it makes it any less concerning.) Here's an article from over a year ago talking about

This issue raised here is nothing new or specific to Twitter. (Not that it makes it any less concerning.) Here's an article from over a year ago talking about how Facebook does the very same thing with their like button: http://www.geek.com/articles/news/facebook-like-button-tracks-you-even-if-you-dont-click-20110519/ http://www.geek.com/articles/news/facebook-like-button-track... "Any time the Like button is displayed, information is zapped back to Facebook’s servers. As long as you’ve been logged into the site in the past month, Facebook happily continues warehousing your whereabouts."