Facebook (NASDAQ:FB) stock may stage another rally with teens coming back to the social network, Senior Tech Specialist Tim Beyers says in the following video.

Forrester Research asked 4,500 teens about their social media usage and found that 8 out of 10 use Facebook at least once a month while nearly half said they use the site more today than they did a year ago. Higher usage should lead to higher engagement, which could, over time, boost ad revenue.

Teens are a key catalyst, Tim says. Not only do they tend to be flush with disposable income, but they're also more receptive to the sorts of mobile ads that have become Facebook's bread and butter. In a 2011 study by Nielsen, roughly 60% of teens surveyed said they "always" or "sometimes" look at mobile ads.

Yet the good news doesn't end there. Forrester says Facebook ranks as teens' most-used social platform, followed by Instagram, Snapchat, Twitter, Vine, and finally WhatsApp. That's an impressive share of a key audience with plenty of spending power, and it may help to explain why Facebook chief Mark Zuckerberg was willing to pay $19 billion for WhatsApp.

Now it's your turn to weigh in. Are you engaging with Facebook more? Are your kids? Please watch the video to get the full story, then leave a comment to let us know your take, including whether you would buy, sell, or short Facebook stock at current prices.