SEO vs sem what is the worse

SEO and SEM are http://www.aliyun.com/zixun/aggregation/8485.html "> search engine Marketing Two strategies, then who is more advantages?" This article will in-depth analysis of SEO and sem differences and links. Little head bidding assistant to give you a detailed explanation today. SEO, that is, search engine optimization, is for all search engines do, from which you can harvest from Baidu, Google, Yahoo, Sogou, 360 and other major search engines to come to the traffic. And SEM, different search engines under the service mechanism is not the same.   Advantage   Trust is higher   than Sem,seo trust. SEM is as a commercial advertisement exists, the user clicks This is holds the mentality of the advertisement, but the natural rank has the essential difference, the user will take for granted that the top website has the professional, the credible essence.   More clicks   Natural search results are at the center of User vision, and can get a higher rate of click and attention. According to the study, the natural results ranked first in the flow of more than the first place paid.   Stop spending, flow Yu Cun   for SEM, traffic will stop because of the end of spending, and for after a professional SEO optimized site, even if the SEO service stopped, the natural flow will continue for some time, and basically stable.   Disadvantage;   Effect lasting   SEO optimization of the effective time of less than 6 months, need step-by-step, gradual. So to SEO have a full understanding and prepared.   Flow instability   with the search engine algorithm changes, keyword rankings will change, the flow of natural difference. The stability cannot compare with SEM.   No guarantee   SEO can not be the same as the purchase of AD location generally have predictable results.   SEM, that is, search engine advertising, through the payment method to obtain a way of traffic.   Advantages   Real-time flow, can quickly obtain flow, quick results.   testing is convenient, can be very good analysis of which words can bring better conversion rate. Through SEO keyword strategy, observe visitor behavior, improve order transformation.   Accurate placement, accurate positioning, so that potential users more accurate, more intent, and reduce the need to spend.   Brand zone   for Baidu, the brand area does a good job, the effect is better. Through this area, can quickly obtain a large number of users attention.   Disadvantage   user coverage is narrow;   SEM user coverage is very limited, the quality is not high. Most users are reluctant to click on SEM ads.   Low degree of trust   SEM ads users trust less than SEO, this point is needless to say, the previous article also involved.   No long-term benefits   once the cost is stopped, the SEM flow can stop, will not appear seo "snowball" phenomenon.   This need not explain, although the search engine already has some filtering mechanism, but also can not be hundred prevention.   Above is a personal point of view, for reference only. For enterprises, will be SEO and sem united together, to learn from each other, will be the company's search engine marketing benefits.