A Pingback is a method that blog authors use to request notification when somebody links to their blog. This allows authors to keep track of who is linking to them or working off of their content.
A Trackback is also a method for Web authors to request notification when somebody links to one of their documents. Blogger does not currently support Trackback.
A Backlink, which is supported by blogger, enable bloggers to keep track of other pages on the web that link to their posts.
The backlinks setting can be found under the Settings | Comments tab, and consists of a single, simple option to turn it on or off:
Blogger default templates are already set up with the necessary code for backlinks. However, if you have a custom template, or one of our templates from before this feature was launched, you will need to add the code yourself. Instructions for that are here.
Once everything is set up, you'll see a new link marked "Links to this post" next to the comment link for each post.
You should also enable people to e-mail your posts if you are going to use backlinks.
Show Email Post links?
Email Post links let your visitors easily email posts from your blog to their friends.
When your backlink is installed your post footer will look something like this.
If you click that link you will be taken to the post page, where the backlinks are all listed beneath the comments. Clicking the triangles next to each link will display a snippet of text from the page linking to you, as well as some author and date information.
If you want to turn off backlinks for individual posts, you can do so. The process is the same as that for turning off comments. Just edit the post in question and change the options that appear below the posting form:
Want to check to see who has linked to your blog?
There are a number of services that can help you.
A word of caution.
If you are looking for 'quicky' linkings use caution when dealing with services that offer to do it for a fee. You never know who you may be linked up with.