said 1 year, 5 months ago:
@leilajones No need to apologize. :) I just wanted to make sure I didn’t start babbling about one thing if you meant something else.
How it works (pingbacks): If you link to a person’s blog post in one of your blog posts, that person should get a notification that you link to them. They can then approve that notification which will post a link to your blog post from theirs.
How it works (trackbacks): Same idea as above, but instead of linking to a person’s blog post in one of yours, you just enter their blog post in the Send Trackbacks field when publishing a post.
How it works for SEO: If enough people approve your pingbacks / trackbacks, they will count as backlinks to your post. The more backlinks you have, the better your post will rank, usually for the keywords you have optimized it for especially in the title.
Pingbacks / trackbacks are usually accepted on WordPress blogs unless the blog owner has specifically turned them off. They have been abused by spammers (people who link out to another blog post just for the link back) so a lot of bloggers (myself included) have turned them off so there is less spam.
Really the only way to know if another blogger has them enabled in a way that can help build links back to your site is to see if they have trackbacks / pingbacks in their older posts, usually above or below the comments.
That’s how I understand it all at least. WordPress.org also has a great explanation of how it all works in their Intro to Blogging.
Hope this helps!