Is google building a worldwide wifi network?

Yesterday after upgrading my phone from Android 4.0 to 4.2, I noticed that my wifi password were automatically restored from Google backup.
Call me n00b, but I hadn’t read that G save it!!!!

The thinking sequence was:

  • Google scanning for wifis meanwhile building Gmaps
  • Google saving TONS of wifi passwords coming from android
  • Google have access to 50%/60%/70% of the whole world wifis!

I suppose I’m not the 1st on thinking about that but… it makes me shudder man…