Microsoft says that the daily front page image that is placed on the Bing.com home page is picked by the Bing team based on the amount of "user happiness" the image can generate.
...of Lumia flagships, Windows milestones, and Samsung's reminder to RTFM
Why the long wait for new Windows 10 Mobile builds?
One month on, what do you think of Windows 10 so far?
Windows 10 Insider Preview build 10532 rolls out
Samsung confirms devices it plans to upgrade to Android 6.0 Marshmallow
The Top 10 apps no Windows 10 PC should be without
Known issues with Windows 10 Insider build 10532
Microsoft is apparently testing a new feature on the Bing.com front page that brings up the Bing Snapshot information box via Autosuggest when someone types in a search string.
Bing.com got a slight refresh this afternoon and is now a bit larger and appears to be finger friendly. The redesign is not massive in scope, but does alter the layout in a few areas.