well, now a days increase demand of Google adwords but today first preference SEO because its provides long terms benefit while Google adwords very costly and not provides long terms results.
This was a very interesting thread. I've had my own theories in the past about whether PPC affected organic rankings.
You're not the first I hear say basically the same thing. Frankly, I don't understand the reasoning. How can PPC not provide long term results? How can SEO? If PPC gets you more traffic and is profitable, that's long term to me. Why would you want to stop using it? Not saying to only use PPC (or only SEO for that matter). Both should be part of your marketing.
PPC does not helps you in SEO. But I think this like mystery allover there. But all you have to really choose a good keywords and get adwords.
Google Adwords helps you get traffic, however it is not directly related to SEO. You have two kinds of listings; paid ads and organic listings. Adwords gets you atop of the list faster (for money). SEO, on the other hand, does not need to be paid and can be achieved after months of work.
I've found that running an adwords campaign against a domain gets you indexed and ranked pretty quick. Maybe not ranked higher then you should be - but it helps you get indexed quickly at least.
I agree with this thought that both are important part of effective marketing. But Mostly I rely on SEO because it is much organic method of get long terms search engine results. Google Adwords and PPC are great for carry maximum traffic.