I picked these up off one of my news feeds. These are as much as quotes as I can make them, in traditional academic fashion.

buddy-media-social-marketing.jpg
Source: Buddy Media / Luma Partners, click image for reference 1

After that I found this
di-media-profile
Source digital insight. The second image was issued through linked-in, so I don't have an original URL to go back to.

As a psychology study, read this
color-guide.png
Source: Leo Widrich, click image for reference 2

the click though isn't showing up in the resultant HTML.