I got this message above earlier this morning and I wondered what is a “Pingback” and I went to investigate. So I’m sharing the knowledge for the benefit of those who also might not know.
Incase you can’t read it out here is the link http://en.wikipedia.org/wiki/Pingback
We keep on learning…. 😉
For some self learning check out these http://enitiate.me/quick-digi-tips/