> The privacy implications of such behavior by a company so large are sweeping and absolute.
Like most articles about tracking cookie this, and tracking widget that, it does come off as overly sensationalist to me and makes me think it's meant to scare people more than they should be about such a thing.
> Is it okay for Twitter to sell your web browsing history to advertisers?
Serious question, where are the people/businesses that buy peoples browsing histories? It's an argument raised a lot of the time as responses to this sort of thing and I've never seen evidence that a market exists for it.
> I'm amazed that Twitter is overtly admitting to this behavior without considering the privacy implications.
This is a bit of a confusing sentence, do you expect them to hide it? Or what makes you think they haven't considered privacy implications?
Edit: According to tech crunch they have considered your privacy as they are having a switch that lets you turn this functionality off: http://techcrunch.com/2012/05/17/twitter-wants-an-interest-g...