What are pingbacks ? do i need to allow Trackbacks ?! Grrrrr
What is Trackback
…TrackBack was designed to provide a method of notification between websites: it is a method of person A saying to person B, “This is something you may be interested in.” To do that, person A sends a TrackBack ping to person B.— SOURCE
In a simple words, when you allow trackbacks then you will be notified whenever another blog mention your post, so it's a notification telling you that someone has linked to your post!
What happens when i approve a Trackback
There is a big debate always if you should approve or not, but talking statistically most often they are spam, when approving trackback then you have a comment in your post showing it, the only good thing or benefit i think of when comes to Trackback, that you can be informed whenever someone use your posts as maybe it will SEO harm you.
What to i hate about Trackback ?
Simply, it's a time wasting, big cause of spam and last but not least that it's not used anymore, it's a legacy thing.
There is an option to disable the Trackback and Pingback notification and get rid of that hassle forever, depends what wordpress flavor you are using, for example in wordpress.com it's there under more options