www.geekazine.com This week on the Five tech things you should know - Duke Nukem is out, some people are bashing it. Why? Pandora comes out with an IPO, will the stock stay strong or lose out in 6 months? Ad sites like Groupon may be breaking the law. Will you pay $349 for a Chomium Notebook? Finally, certain set top boxes and DVR machines take up more power than your refrigerator.