Tech News Roundup: BlackBerry Playbook Preview, Firefox Add-Ons, LinkedIn Ads Slammed, & Microsoft May Buy A Phone Maker

Here's a video from PC World showing the new Blackberry Playbook tablet due out in March.  




The list of 21 cool Firefox add-ons comes from Smashing Apps.


"LinkedIn ads are really, really expensive, have terrible clickthrough rates, and very rarely convert," says Silicon Alley Insider. Meanwhile, Read Write Web says LinkedIn 

aims to IPO before Facebook can.


Mcirosoft CEO Steve Ballmer is reportedly open to acquiring a mobile phone maker to catch up to Android and Apple. Some say Nokia is a possibility. 


Here's a slidesow of 12 exciting new hardware products that will debut in 2011.

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