Search engine spam is the act
of using unethical optimization techniques that are designed
to artificially increase the rank of a website or web page.
Spam refers to any strategy that is designed to cheat
the searching engines into giving you a higher ranking
than your page deserves. Employing spam techniques can
get your website penalized in the rankings or even banned
from the search engines without notice.
Some of the most common search engine spam techniques
are:
Keyword stuffing or “spamdexing”
Invisible or hidden text
Page redirect scripts
Gateway or doorway domains or pages without relevant
content
Cloaking
Misuse of Alt tags
Mirror pages
Multiple title tags
Machine generated pages
Hidden links
Participating in link exchange programs or link farms
