From social media platforms to email providers, tons of places on the web want to scoop up your private data. Don’t forget about online stores and personal services, either. Your details are major commodities to most businesses on the web - and most have little regard for your privacy. Advertisers and marketers don't know who you are. But your behavior is tracked and assigned a unique identifier, called a Mobile Advertising ID (MAID). This tiny snippet of information contains where you live, what you shop for or what you recently searched online. Until recently, there had been very little that...