Definition: As in “spamming the search engines”. Spamming is most commonly associated with the act of sending unsolicited commercial email, but in the context of search engine optimization, spamming refers to using disreputable tactics to achieve high search engine rankings. Such spamming tactics include bulk submitting spamglish-containing doorway pages.
FirstClickSEO Commentary: Search engines are becoming very sophisticated. Rather than try and manipulate the engines, work within their parameters and you can be very successful.