It may be done by posting random comments on other blog websites (usually by an automated process), or by copying other websites' content and using it on free-to-use publishing services like Blogger and WordPress or publicly accessible wikis, digital guest books, and internet forums.
Note that blog spam also has another meaning, specifically when a blog author creates posts without adding any informational or educational value solely for publishing them on other websites This type of spam originally appeared in internet guestbooks, where spammers repeatedly filled a guestbook with links to their sites and irrelevant comments, to increase their search engine rankings.
If an actual comment is given, it is often just "cool page", "nice website", or keywords of the spammed link.
Jay Allen created a free plugin, called MT-BlackList,[1] for the Movable Type weblog tool (versions prior to 3.2) that attempted to alleviate this problem.
Particularly popular software products such as Movable Type and MediaWiki have developed or included anti-spam measures, as spammers focus more on targeting those platforms due to their prevalence on the Internet.