How many times has this happened to you: You read about a cool-sounding site here on Business Hacks, sign up for it, then decide it's not really for you. But the site keeps sending you e-mail updates ...

Really want that “free” e-book that’s locked behind an e-mail membership wall, but you know that it’s probably going to shove trash-mail down your throat until you vomit from seeing SPAM? Or how about ...