If there’s one thing that has been sucking most of the oxygen out of Silicon Valley — and Wall Street too — over the past few months, it’s the growing frenzy over Facebook’s IPO filing, which is rumored to be taking place as early as today, and is expected to put a price tag as high as $100 billion on the giant social network  The Facebook S-1 prospectus is here). But apart from the rampant speculation about the company’s ultimate valuation and who will benefit the most, the bigger question about the offering is whether it marks the beginning of a new era of growth for Facebook. Or is it just a massive cashing-out exercise, and a sign that this generation’s version of AOL has finally peaked? @Yungjohnnybravo @TatWZA