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I have a client with several businesses within the same industry - Each of these businesses have their own websites. So, I have a few questions with this in mnd: **When using anchor text (exact keyword phrases) on his website pages, how many links are safe to use per page?  And if I want to interlink between his businesses, is it better to use exact keyword phrases to link or just a straight URL link for those other businesses? **When guest blogging or using an external blog of our creation, is it best to use exact keyword phrases (and how many) or URL links? I want to make sure I am not over linking - help? thanks a lot