Image credits
Most image credits are given on the page where the image appears. In addition:
Frontpage Slider (Aug 2016):
Dock on lake; Copyright Jonny Berg / RGB Stock Free Photos
Sunset over mountain range; Copyright: Arto Martinnen, Stock Snap Free Photos
Frontpage Slider (Nov 2015):
Female silhouette jumping from one rock to another; Copyright: gerper / 123RF Stock Photo
Woman runner silhouetted against mountains; Copyright: maridav / 123RF Stock Photo
Two men silhouetted on top of mountain; copyright: Copyright: tomwang / 123RF Stock Photo
Man on top of mountain reaching for th sun; Copyright: Copyright: gerper / 123RF Stock Photo
Images from Brightlocal, published on How Much Should you Spend on Internet Marketing; permission given by Brightlocal (attn: Susan Guinto, email communication of 6/13/2015).