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Thanks Jess I just did a search for penguin and found out a little about it. Now I believe if you have spam comment that came from SEO software those comments should be deleted right away because penguin and Google are cleaning up a lot spam in the
That may be a good solution.
I was unaware of black hat until you wrote about . So I Google it and found out that black hat seo techniques was known for breaking all the search engine rules and regulations.
Thank you for the useful information. I should do a lot of research on marketing.