Search engines use complex mathematical algorithms to guess which websites a user seeks. In this diagram, if each bubble represents a website, programs sometimes called spiders examine which sites link to which other sites, with arrows representing these links. Websites getting more inbound links, or stronger links, are presumed to be more important and what the user is searching for. In this example, since website B is the recipient of numerous inbound links, it ranks more highly in a web search. And the links "carry through", such that website C, even though it only has one inbound link, has an inbound link from a highly popular site (B) while site E does not. Note: Percentages are rounded.
Movies: a great movie experience gets people talking about it + public relations (TV show appearances or for example, People naming Gwyneth Paltrow the most beautiful woman in the world when Iron Man 3 came out). Advertising just helps to spark word of mouth. The point is to spark word of mouth, because people don’t often see movies alone. They take their family, friends or a date. Those people will base their decision either purely on their recommendation, or by going online and looking for a preview or reading about it, which is also organic marketing. The difference is this: paid advertising will only get the movie so far; organic marketing is what will multiply sales. Money only buys the ad spot, it doesn’t guarantee a return on that ad; the quality of the ad and the storytelling in it is what makes it effective or not.
That’s a massive problem. And it’s one that organic search traffic solves. If you want to correlate your marketing efforts with a solid ROI, pay particular attention to where your customers are coming from. If you know where they’re coming from, you can calculate what you invest in each marketing channel, and what return it yields for your business. Some people believe that PPC is better for calculating ROI because it’s more measurable. That’s misguided. You CAN determine what an organic visit is worth to your business in terms of a hard dollar value.

Paid advertising and sponsored social posts cost money but work fast, so they’re a good way to give an immediate boost to your traffic regardless of what stage your business is in. In fact, paid strategies are a good way for new companies to get their names out there while they work on their organic strategy. However, paid traffic drops as soon as the payments drop, so you’ll want to make sure you’ve got a healthy amount of organic content before ending a sponsored campaign.
Pay Per Click (PPC) advertising is the most common form of paid SEM. PPC ads are the ones you see at the top of your Google search with the word “ad” written discreetly next to the link. Search engines such as Google sell keywords to the highest bidder. One of the nice things about this form of advertising is that – as the name suggests – you only pay for the ad when someone actually clicks on it.
Organic is different. Matching keywords to user intent means you may be present in many searches. The user may find you consistently, and once they get to your site, they are more likely to stay. Organic users are still your best long-term customers. In my experience, they have lower bounce rates and more pages visited, and they are more likely to return.