(My site in Yahoo and MSN's is not bad, but why always in google can not be found? Or my ranking in Google has been good, but one day, the ranking has all gone!) Everyone hope to rank well and maintain good traffic. Yet, we must recognize a concept that the search engine rankings are not stringent. Today, you will feel happy for your website on day. But, it various on the next day. We can not assume your site's ranking will be permanent.
Web sites are generally will not be penalized or blacklisted unless you have used some improper optimization techniques on your site or improperly add a large number of import links. Otherwise, you do not have to worry about the punishment. Your rankings suddenly disappear or fall, which is usually related to the change of search engine ranking method. The search engine will often fine-tune the ranking method, and every day there will be a new site on board. So that, the site ranking rise and fall, it is normal.

Ranking will fluctuate because the search engine will follow the update sorting mechanism on the grounds. It is due to the improved accuracy of data search. Also, the use the mechanism of conversion is also crucial to the elimination of manual operation.
So the ranking will fluctuate. The difference depends on the degree. While the operation of the website stays longer time, the site scores will tend to be an average standard. Even though the search engine to change the sorting mechanism, the site ranking fluctuations will not be too big, or even stay the same. So the implementation of website SEO is the best way to maintain the site ranking.

In addition to adjusting the site SEO, it is required to wait for the search engine to update the information. Then, followed by the updated information, it will adjust the ranking of SEO review.
Normal SEO implementation takes about three months while most of the time spent on waiting for data updates.

Selection of the keyword should consider the budget and the accessible evidence. It also helps to arrange the most appropriate combination of keywords and the number.
Suggested keyword types:
A. Think about the keywords from the perspective of consumer.
B. Select important keywords to arrange combinations.
C. Do not use wide words or difficult words.
D. Do not use keywords that are irrelevant to your site.
E. Quality overs quantity. It’s good to maintain 10 groups of keywords.

SEO is referred to as search engine optimization. It is the basis of online marketing. Tens of thousands of competitors in the growth of the digital world. How to make your own sites stand out from the competition? It is highly related to SEO.
SEO can enhance the organic traffic so as to contribute to better ranking because of the possibility of clicks increased. Your sales and traffics will increase eventually.

In the market, there is some companies implementing negatives means. It is not only harming the customers but also causing the customer site being blacklisted by the search engine. However, SDMC insists to maintain the best interests of customers. We will never execute negative means.