This week Twitter announced a new version of its "Who to Follow" feature, making it a far more personal recommendation engine. The way it works, however, is that if you're logged into Twitter in the web browser, any site that calls Twitter code -- like a Tweet or Follow button -- can report your presence on that site back to Twitter. Gadget sites. Car sites. Movie sites. Porn sites. Gaming sites. Any. Site.
Here's how to turn it off.