With Facebook (NASDAQ:FB) shares up over 50% since its earnings blowout, it's understandable for potential investors to be a little apprehensive about getting involved at these levels. After all, the social networking giant's market valuation is now just shy of $100 billion.

Fool contributor Steve Heller thinks that as long as you have a long-term mindset, preferably with a five-year or greater time horizon, Facebook remains an attractive investment. In the video below, Steve lays down two reasons why Facebook likely has a lot of untapped growth potential ahead as it finds new ways to monetize its massive user base.

Fool contributor Steve Heller has no position in any stocks mentioned. The Motley Fool recommends Facebook. The Motley Fool owns shares of Facebook. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.