
Still  wondering what the terms in your like Pingback,Trackbacks and Linkbacks  mean. Well if you look around your WordPress blog you will find a  section for 
Send trackbacks to: in your blog. Well a pingback is a way in which blogs communicate with each other.
Trackbacks

Trackbacks,in  a layman’s language are a way to notify a website when you publish  something and that you’ve linked to them..When you send  a trackback, a  link with a short excerpt(often seen as a “teaser”) of your post will  appear on the referred website. Trackback is more prone to SPAM

Trackback
Pingbacks

Pingbacks  were designed to solve some of the problems that people saw with  trackbacks. Both Pingbacks and trackbacks use different  technologies,XML-RPC and HTTP POST, respectively to post the content.
Pingbacks do not send any content. A pingback works automatically  when a person A shares a link about some post from a person B’s blog on  his website.
Refbacks

Quite  similar to Trackbacks and Pingbacks a Refback,is whenever a browser  traverses an incoming link from Site A (originator)  to Site B  (receptor) the browser will send a referer value indicating  the URL  from where the user came. Site B might publish a link to Site A after   visiting Site A and extracting relevant information from Site A such as   the title, meta information, the link text, and so on.