The main factor of having a successful profitable ppc campaign is in the keywords you choose. You can initially start off by gathering thousands of keywords and go for an approach of paying a low bidding price per click but having the quantity of keywords to gain substantial traffic and sales. The problem with this is that some keyword will not be relative and be bumping the price up. You have to keep a close eye on the keywords performance and remove any negative keywords so make sure you do routine checks to identify them and remove as soon as possible.
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