I encourage you to read the stickies in the internet marketing forum which are the very top.
This question is too broad to give you a proper answer without creating a whole website (or forum for that matter) about it and it's been discussed (in the appropiate forum) too often. You should also try to search the fourm. This is just a tip, of course
I'm closing the thread
Before asking, do a search... if you don't find the answer, then ask The purpose of this forum is to help others in the community, that's why it's called Sitepoint and not Linkpoint. SP Guidelines - No fluff.
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