The most common SEO spamming techniques

Sometimes, SEO companies have to choose spamming as the quickest way out in order to get higher rankings for their clients in a short period of time. This of course is not a lasting solution by any stretch because the penalty for spamming is severe. Once a search engine realizes that a site has gained a higher ranking through spamming, it will bury the site or remove it completely from its index.
It is always foolhardy to live in ignorance. Because if you are ruined due to your own ignorance, you have none but your self to blame. So knowing about spamming techniques is a must for both SEO companies and clients so that they do not remain fall prey to the situation. It is easy to dig out information on the Internet because it is simply strewn all across the web.
Lets look at the most common ways to spam
a.    DHTML laying and hidden text under layers
b.    Dynamic real-time page generation
c.    HTML invisible table cells
d.    Domain spam
e.    JavaScript redirects
f.    Duplicate domains
g.    Mammoth web sites generated by machines
h.    Invisible text
i.    Publishing empires
j.    Wikis
k.    Link stuffing
l.    Networked blogs
m.    Links inside noscript tags
n.    Forums
o.    Link farm

These just a few examples of the many ways that are used to spam. There are new ones coming up all the time and there are some unknown techniques because only a handful of Internet marketers are working on them.
Actually, it sometimes seems like spammers are as ingenious as SEO professionals and they probably know more about the Internet than the ethical experts of Internet marketing.