1. Traffic which comes from internet users who find you thru search engines, or by following a link, paid or unpaid, to your site.
2. Traffic coming from mailing lists or socal networks, which you can induce by sending an email to your list, or by making a post to facebook, twitter etc.

Know The Difference
I do not have direct influence, when people search for, lets say a flight from Mumbai to Frankfurt. And if they reach me, they are not very likely to trust me with their credit card information, because they do not have a real clue, who I am.
People, whom I reach thru my mailing list, or Facebook and Twitter, had a chance to learn a lot more about me. They have an idea whom I am. This makes it is easier for them to trust me.
And I have the opportunity to tell them about a hot offer, when it is available. And sometimes, I can give an advance notice, before a price is going up. This makes them much more likely to buy. Why? Because my offer is timely, and because they have a chance to know me as a person.

So, there is a sequence from first time visitor to member of a mailing list, and/or to connect via social media. This allows us to develop a relationship and trust..

Frank Kern ist a master teacher in that. Watch his free videos and read his detailed report.