Keep your guard up when using Twitter and Facebook - USATODAY.com

You're careful about what you post online. You know Facebook and Twitter posts can harm your dating and job prospects. And thieves can use the sites to target you.

But there's much more to maintaining your security and privacy. Criminals and marketers have found new ways to use Twitter and Facebook. If you're not paying attention, it's easy to get taken. You'll find links to the sites mentioned here at www.komando.com/news...