I think that we can all agree: in the grand scheme of large numbers, 1-billion is a pretty big one. This week, Google added Maps as the second entry on the list of their development efforts that enjoy over 1-billion installations; the first was Gmail (starting off the list in May of this year).
May be big but I don't like the latest version. I've switched to Bing and Nokia.

Read more @ Google Maps Attains 1 Billion Installations