But he offered no major sneak peeks or surprises at the keynote he gave at GDC this morning.

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Getting sneak peeks at unpolished work is part of the fun of CES. But enthusiasm should be tempered because many of the concept products shown in years past have never materialized.

CNN: Mark Milian

Lady Gaga, the queen of Twitter, has managed to find the balance between personal tidbits, promotional info and sneak peeks, unlocking the social media code that other celebrities are still trying to emulate.

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