Peter Pesti created Google Maps at Nighttime. This map overlays both night, dusk and day versions of the standard Google Maps product. The site remarks, "The underlying 128 megapixel night imagery from NASA uses a map projection different from Google Maps'. The two are aligned near the NYC-Madrid-Tokyo axis only." I forgot exactly where I found it yesterday, but I thought it was worth a quick note.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.