Age is just a number. So is a company's earnings growth rate. That latter figure is far more important. Many investors like the explosive growth punch recent IPOs can pack. But they can fizzle. Today's Screen Of The Day looks at firms with Top Fundamentals. Among them are three fairly recent IPOs that make for better friends than Facebook (FB) has so far in its short public life. The enterprise software company Tangoe (TNGO) tops the list with