I think, there is a relationship between Adword spending & Google organic SEO position. Google might not do it explicitly or in a deliberate way, But there is in my experience.
For example, Assume two websites A & B are having a same SEO strength and same organic traffic.
Assume few months, we spend more money on promoting website B on Adword, the organic results are improving for the site B, but not for the site A.
This i have seen it many times, Please clarify my views.
Short Answer: No, there is no direct relation between google adwords spending and organic traffic.
Long Answer:
When you spend money on adwords or any other online advertisements, more people will know about your website. Thus, more people will visit, link, share your website which may result in higher organic traffic or higher SEO Rank. Also, more people will then directly search your website on google to comeback.
My point is that if you spend money on bing network, you will still see the growth in google SEO ranking.
Infact, any advertising, through any channel (TV, Print or Online) will result in higher organic traffic and/or higher SEO Rank as more people will know about you and it will reflect in your seo rank.
There is no relationship between Adwords spending and organic traffic, which is why one is seen as "paid" (Adwords) and the other "organic" (SEO) - totally separate channels.
However, if people do love and start sharing your product page or other spin off content pages from your website to social networks or blog about it etc. (backlinks), it will no doubt help with your SEO rankings. This could be particularly so if your campaign landing page, ad relevance etc. is highly optimized for conversions. If people buy, they'll most likely talk about it yes?
As hendry pointed, It's just like any other medium of advertising our brand. We will surely get page views and attention from the outside world and Google search.
I have personally seen websites gain traffic and organic ranking from being AdWords advertisers. Google does not claim that AdWords has anything to do with organic, but I've seen the results. It seems to help a lot.
So I have been doing some research on this as I saw a correlation between my organic traffic and google adwords traffic. Whenever I increase my adword spend my orgnic traffic increases and vice versa.
Is google doing this deliberately - probably NOT. But its a vicious circle, the more people see your adverts the more they search for you organically so both go in tandem. This is especially true if you are an eCommerce player and most of your business is new business.
I actually went ahead and did some mathematical regression testing! The result for my site showed a 76% correlation between organic and paid traffic. So yea, there definitely is a correlation between the two.
