Everybody who have website is carzy about its website's search engine optimization, he need its site to be top for targeted keywords. But I want to know- Is search engine optimization really needed?
yes, today its absolutely necessary to market to your product. otherwise no matter however good your site be, but unless you get traffic it is meaningless. SEO optimizes your site to improve your rankings, SERPs and traffic. Hence, i thinks its absolutely needed.
You need at least some basic SEO. If your site is destined to become the next facebook, you don't need it. Then you would expect lots of top ranking sites (like cnn, ny times etc.) writing about your new invention day in and day out.
If you have a website, you must know about SEO to get traffic and target keywords relevant to your site. Also, you must read the Google Guidelines as well.
I site owner must know a little SEO concept as today 70 to 80 % traffic are coming from search engine. so it is most important part for sell. we can not underestimate search engine traffic.
I think it really depends on the goals of the sites. If they want to boost the sales of their services or products, SEO is really required to maintain its rankings and traffic.