Every purchase, online web search and even cellphone call generates data that companies hope to use to boost sales. But storing all that data is becoming a big expense, and it has spawned a multibillion-dollar industry.

Dieters are taking fitness-tracking devices to a new level. They are creating virtual support groups by posting their "body data" on social media networks.

Marketplace's technology reporter Queena Kim tells us what we can look forward to in the tech sector in 2013, from ongoing tablet wars to more privacy regulations.

On Monday, Congress takes up a $60 billion recovery package for areas affected by Superstorm Sandy. When the lights went out and the floodwaters moved in, people needed food and sandbags, sure -- but they also needed information and connectivity.