Title says it all, what is a "Trackback" as it relates to the Blogs?
Well, a "trackback" is supposed to be for notifying the original blog poster that you have referred to their blog entry in another blog.
I have some weird listings on my blog, a lot of online gambling sites.
Unfortunately, most blog websites receive tons of "trackback spam" each and every day.
I have deleted all of your trackbacks. Gadzooks, just one of your blog entries had over 1,000 trackbacks to various poker sites!
I just blocked one of the major offending IP addresses, but, in the end, I will probably turn off trackbacks, which is what many blog websites have ended up doing in order to stop the spam.
If someone really wants to notify you that they have mentioned your blog entry elsewhere, they can do so in the "Comments" section, which is only available to members who are logged in, so there is little chance for any monkey business.