Facebook and Twitter - Old Hat?

Are the popularity of Facebook and Twitter about to take a major decline? I'm not one-hundred percent sure, but it feels like both social networks are becoming passé. Now that both are connected to Xbox Live -- and soon to PlayStation Network, it feels like we are all a little too well connected to these services.

But there's other anecdotal evidence that leads me to believe that both of these services are going to be in our rearview mirror soon-ish; when the local news station and churches are using twitter and Facebook to give us updates and every company on the planet is in there spamming the ever-loving crap out of us because we were stupid enough to sign up for their feeds, then we start to see that the once shiny apple has lost its luster. Just like MySpace.