Recently, forum marketing has been touted as a kind of free, organic, viral marketing. But because so many marketers go into forums purely with the intention of marketing products or services, their actions and attitude unwittingly causes the exact opposite of the desired effect.

Forums aren’t marketplaces but when used as such, the marketers’ actions become offensive and will only inspire the wrath of fellow members and marketers, not to mention moderators who can ban them from...