A permalink (portmanteau of permanent link) is a URL that points to a specific blog or forum
entry after it has passed from the front page to the archives. Because a
permalink remains unchanged indefinitely, it is less susceptible to link rot.
Most modern weblogging and content-syndication software systems support
such links. Other types of websites use the term permanent links, but
the term permalink is most common within the blogosphere. Permalinks are often simply rendered so as to be human-readable.