To give you an idea of just how much money is being spent on paid search, take a look at Google. Google's AdWords program is the most used pay-per-click (PPC) advertising program available today. While the tech giant owns YouTube and Android, among hundreds of other profitable brands, AdWords accounts for roughly 70% of their revenue -- which speaks wonders for its effectiveness.
Google claims their users click (organic) search results more often than ads, essentially rebutting the research cited above. A 2012 Google study found that 81% of ad impressions and 66% of ad clicks happen when there is no associated organic search result on the first page. Research has shown that searchers may have a bias against ads, unless the ads are relevant to the searcher's need or intent 
But search ranking is competitive, so naturally, it’s not easy to claim that top spot in organic search. That’s why many marketers and website owners pay to play, and why so many people choose the Pay Per Click (PPC) route. It’s fast. It’s effective. It’s high-visibility for your business. The caveat? You stop paying, and your visibility goes **POOF**.
The last thing you need to do is evaluate the results and simply do it all over again. You will need to be constantly reassessing your organic marketing plan. The situation, audience, and goals will be constantly changing. Your marketing plan will need to change to adapt to this flux. You should reevaluate your organic marketing strategy at least every quarter.
Lynn, you have one of the best sites for affiliate marketing that I've ever seen. Just read your interview with Rosalind Gardner and found some interesting nuggets. Marketers should note the intuitive and spontaneous way you approached a niche and keywords. This is usually where "paralysis analysis" begins … some spend weeks with keyword and research tools until there is no "creative energy" left to build the site.
First, I will show you a quick snapshot of the traffic uplift, which yielded an additional 400,000 unique visitors from organic search traffic on a monthly basis. Then I will explain to you the steps in which we took to get the client to this level. I have also tried to keep this quite general so everyone can adapt their own situation to this case study.
Though a long break is never suggested, there are times that money can be shifted and put towards other resources for a short time. A good example would be an online retailer. In the couple of weeks leading up to the Christmas holidays, you are unlikely to get more organic placement than you already have. Besides, the window of opportunity for shipping gifts to arrive before Christmas is ending, and you are heading into a slow season.