Since forums are great source of information in which insights, advices and knowledge of several specialists and experts of the certain online marketing niche are accessed and read. This is the reason why forum posting also has become one of the effective SEO strategies to gain link popularity and higher page rank. Forums sites are destination of the experts and specialist, thus making it a reputable place for link popularity.
However, it has also become one among the destination for abuse. Spammers tend to join the discussion in the forums just for the purpose of publishing links of their own site. It may be acceptable, provided that users provide insightful bit of information related to the discussion thread. But spammers do otherwise. They only publish links and drop irrelevant messages. Sometimes, their messages are just group of gibberish words or characters. The most often practiced strategy by the spammers is responding the forum discussion with a link or several links that are actually not an answer to the issue in the particular discussion thread. The links published in the message box are actually leading to the site of these spammers. This is done by the spammers to gain more traffic and links for their site.
While some are busy publishing the links of their site in the forum sites, some are also busy creating a lot of discussion thread for the mere purpose of raising search engine rankings.