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Best long term answer is beat their content. Another solution is to beat their links, but you are one panda-style update away from losing any questionable links. There you have it in two clear sentences.  The methods and the risks. Thumbs up!

Thanks Nick! Isnt' black hat. It's unique content. It's more an "urban dictionary". Thanks again!

Thanks for replyiong me Nicole! I don't see this so difficult. Luck for me, at my country level, SEO isn't so advanced. Almost competitors have one or two backlinks at most. I'll for sure rewrote my procedure to include your suggestion. Thanks again. Anyone else have a insight for me?