By Chris O'Brien

The publication of internal documents about Twitter that were filched by a hacker caused fans across Silicon Valley to express their outrage.

For all the controversy, my own gut reaction after reading the notes and financial projections: "Is that it?" These were the great trade secrets that the valley fretted could undermine Twitter's future and send it plunging off a cliff? Hardly.

After covering Silicon Valley for more than a decade, I remain astounded by how companies of all sizes remain obsessed with secrecy. We live in an age of growing transparency. Yet companies are desperately pushing back against the information age they are enabling. Apparently, openness and sharing is good for everyone but them.

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