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From Wikipedia, the free encyclopedia
TrackBack is a mechanism for communication between blogs: if a blogger writes a new entry commenting on, or referring to, an entry found at another blog, and both blogging tools support the TrackBack protocol, then the commenting blogger can notify the other blog with a "TrackBack ping"; the receiving blog will typically display summaries of, and links to, all the commenting entries below the original entry. This allows for conversations spanning several blogs that readers can easily follow.
Blogging software that supports the TrackBack protocol displays a "TrackBack
URL" along with every entry. This URL is used by the commenting blogger, whose
software will send XML-formatted information about the new entry to this URL.
Some blogging tools are able to discover these TrackBack URLs automatically,
others require the commenting blogger to enter them manually.
The TrackBack specification is due to Six Apart who first implemented it in its
Movable Type blogging software in 2002. It has since been implemented in most
other blogging tools. Six Apart started a working group in February 2006 to
improve the Trackback protocol and have it potentially approved as an internet
standard by the IETF. One notable blogging tool that does not support trackback
yet is Blogger.
Some individuals or companies have abused the TrackBack feature to insert spam
links on some blogs (see sping). This is similar to comment spam but avoids some
of the safeguards designed to stop the latter practice. As a result, TrackBack
spam filters similar to those implemented against comment spam now exist in many
weblog publishing systems. Many blogs have stopped using trackbacks because
dealing with spam became too burdensome.
This article is licensed under the GNU Free Documentation License and uses
material adapted in whole or in part from the
Wikipedia article on TrackBack.
GNU Free Documentation License
Copyright (C) 2000,2001,2002 Free Software Foundation, Inc. 51 Franklin St,
Fifth Floor, Boston, MA 02110-1301 USA. Everyone is permitted to copy and
distribute verbatim copies of this license document, but changing it is not
allowed.
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