Dropping Facebook Shares Reflective of Decreasing Popularity?

Was just reading this article about Facebook shares hitting a record low:

http://www.theglobeandmail.com/globe-investor/facebook-hits-record-low-a
s-investors-rethink-love-of-social-media/article4483829/

And what I'd like to know is are such share fluctuations a result of the fickle market, or does it mean Facebook is becoming less popular with it's users?

What do you think the longevity of Facebook will be - is it going to be around for another 10 years or ..? What are your thoughts?

I generally grown to dislike social medias... so I rejoice in the falling of Facebook.

Although.. then I realize, that by falling it just means that Zuckerberg and the rest of the top people at FB will only have like... 1-2 bil dollars less than what they had in shares initially... so they still are worth in the double digit billions... which means FB will be around for a looong time. Unless there is a massive scandal.