In the Internet age, seo has gradually developed, optimized and standardized;

In 2000, a pay-per-click search engine advertising model (PPC for short) appeared.

200 1, some classified directories (Chinese) begin to log in for a fee, and each website has to pay a fee ranging from several hundred yuan to several thousand yuan every year.

In 2002, domestic people set foot in the field of SEO.

In 2003, GoogleAdSense appeared.

In 2004, domestic latent SEO began to surface, and the SEO team gradually grew. SEO market is in a state of disorder, illegal operation and vicious competition. SEO optimization mostly adopts individual workshop operation, and the company's operation scale is small. SEO training market was born.

In 2006, with the fierce competition in the network market, enterprises have a new understanding of the behavior of network companies and network products, and enterprises began to treat the network marketing market rationally. With the popularity of Baidu bidding, enterprises have also realized the importance of search engines, and many SEO service companies have also been born.

In 2007, with the popularity of SEO information and the rise of network company technology, some companies launched effect-based SEO services, from website construction to keyword positioning to search engine optimization, and the overall SEM network marketing scheme was launched and implemented.

In 2008, as the technology and concept of SEO service companies gradually matured, some companies launched website planning services, aiming at building efficient websites (paying more attention to website user experience) and website user conversion rate, and paying more attention to marketing effects.

In 2009, SEO entered the stage of incandescent development. Individuals, teams, companies or training institutions vigorously promote and use SEO technology to operate the website, so that the keywords of the website can be ranked and included faster.

20 12, the SEO industry has entered the adjustment, and the original service model has been difficult to achieve a win-win situation. Many companies downsized, and some companies began to seek new service models.

201February 15, when searching for SEO-related words in Baidu, "Baidu reminds you: Don't trust the rhetoric and cases of SEO companies. Improper SEO may cause risks to your site. It is recommended that webmasters refer to Baidu official website Optimization Guide before site SEO. " This move is considered to be an important measure for Baidu to crack down on SEO.

On March 8, 20 12, when searching for SEO-related words, "Baidu reminds you that SEO is a very important job. Please refer to Baidu's advice on SEO. " This move is considered to be a compromise made by Baidu under pressure, probably to avoid circumventing the monopolistic behavior of similar industries, admit the existence of SEO, and suppress the development of SEO in disguise.

20 12 in may, Baidu launched the Baidu webmaster platform, and the webmaster platform released "Web2.0 Anti-spam Detailed Raiders" and "SEO Precautions for Famous Sites", which put forward some valuable suggestions for the rational optimization of the site and staying away from cheating.

20 12 June, Baidu updated its anti-cheating strategy, and a large-scale website was claimed by K and Baidu that "measures against low-quality websites took effect", which triggered a large-scale click on Baidu bidding event jointly initiated by webmasters! Among them, medical bidding is the direct victim and the biggest victim of this incident.

On 20 12, 10,123, Baidu's anti-cheating algorithm was upgraded to crack down on websites cheating in the form of hyperlinks and buying and selling links. However, according to the actual investigation, it is very rare that the websites that really participate in cheating are all K.

2012165438+10-65438+February, Baidu webmaster platform launched a series of webmaster tools (search keywords, Baidu index, external link analysis, website revision, etc. ), third-party webmaster tools have been strongly impacted.

2065438+On February 19, 2003, Baidu launched the green radish algorithm to crack down on all kinds of super-chain intermediaries.

2065438+March 9, 2003 19 The beta version of the external chain tool was rejected for full open use.

On April 25, 20 13, the article "Talking about the judgment of external chain" was released in the webmaster community, which attracted close attention of SEO industry.

2013 on the afternoon of may 17, the anti-cheating team of Baidu web search announced on Baidu webmaster platform that a new algorithm "pomegranate algorithm" will be officially launched one week later. In the early stage, the new algorithm will focus on rectifying pages containing a large number of bad advertisements that hinder users' normal browsing, especially spam pages that pop up a large number of low-quality pop-up advertisements and confuse the main content of the page.

On July 1 day, 2065438, Baidu Lvluo Algorithm 2.0 updated the announcement, strengthened the filtering of the external links of soft texts, increased the punishment for target sites, appropriately punished the sites that published soft texts, and reduced their evaluation in search engines. At the same time, Baidu news source website was cleared out of news source.

On July 2013 19, Baidu's web search anti-cheating team issued a statement to crack down on a large number of high-priced acquisition of second-level domain names or directories, most of which were used for cheating. For this kind of problem of selling second-level domain names and second-level directories, severe punishment will be imposed, which will spread to the whole site and directly block and clean up Baidu news source.

And seo can't be done once and for all, and it always needs new strength:

The full name of SEO: search engine optimization, namely search engine optimization. In order to explain what websites are optimized by search engines, websites that are not optimized by webmasters' search engines are divided into the following characteristics:

1. Web pages are widely used in rich media forms such as pictures or Flash, and there is no text information to retrieve. The most basic SEO is article SEO and picture SEO.

2. The webpage has no title, or the title does not contain valid keywords;

3. There are few effective keywords in the text of the webpage (it is best to distribute naturally and emphatically, and no special keywords are needed);

4. The website navigation system makes the search engine "incomprehensible";

5. A large number of dynamic web pages affect search engine retrieval;

6. There are no links provided by other websites that have been included by search engines;

7. The website is full of junk information that deceives search engines, such as "transition pages", "doorway pages" and words with the same color as the background.

8. The website lacks original content and completely plagiarizes other people's content.