NEW YORK (Reuters) - Depending on who you ask, Facebook is either the best company to go public since Google or the hallmark of another tech bubble. But no matter the ultimate fate of the broad-reaching social network, it's clear that investors will be scrambling to pick up shares when they get the chance. Facebook filed for a $5 billion initial public offering on Wednesday. If all goes smoothly, the actual IPO would follow a few months later. Facebook shares are likely to pop on the first day of trading. ...