[neuronic]

Why does everyone need to go somewhere else when they leave a crappy service?

Stop thinking like that. As a teen/college student I used both and nowadays I barely touch these "services" (rather psychological malware).

I suppose I migrated to my Kindle?

[bduerst]

Pretty much. People have X hours where they are awake during the day - if they are spending Y less time on social networks that doesn't mean they're migrating Y to new social networks. It just means they're focusing on something else.