Some sites are unfriendly to search engines, hindering spiders crawling and crawling web pages, which are called spider traps. Common spider traps are mainly Flash (if you want to use Flash, you must add a hyperlink to the front page and the HTML version. The links to be added to the Flash file outside the HTML code, with this hyperlink, search engines can crawl back HTML page), Session ID (Session ID, each user access to the site will generate a unique Session ID, on the back, then URL one page of the URL will be different, this phenomenon is not reasonable, so the proposed tracking user access using cookies instead of Session ID), jump (search engines are very sensitive to, except for the 301 jump 302 jump, jump, such as Flash JavaScript, such as the use of jump jump, recommend the use of search engines recommend 301), jump frame (Frame) (the use of search engines can't read using the framework of web design HTML code, can only read the call "HTML code, if you also use the framework The structure, please hurry to replace), JavaScript (link to some websites in order to achieve the so-called cool effect, using JavaScript to generate the navigation system, but the search engine cannot capture JavaScript in the text, recommend the use of CSS (cascading style sheets) to achieve the "cool effect).
Clear navigation is an important goal of website hierarchical architecture design. It can bring good experience to users. From the perspective of SEO, we should consider the following points in navigation design.
(1) navigation design. The navigation system is the most important internal link of the web site, and should not set an obstacle to the search engine in the design of navigation. According to the search engine of HTML text crawl resistance minimum, navigation design to use HTML text navigation, do not use the Javascript script, Flash, graphic design, navigation, in short, to avoid the use of search engine does not recognize or capture difficult elements, recommend the use of CSS to design the visual effects, such as font style, color, style two menu etc..
(2) flat design. The closer the distance between the page and the home page is, the better, the inside page is not more than five clicks from the home page, which is to flattening the link.
(3) navigation text includes key words. The link in navigation system is the most important source of page links. Therefore, when designing navigation, we should choose the target keywords and classify them, and the names of columns should be four or five words. In the design of navigation key words, the user experience should be taken into account, and the key words should not be accumulated in navigation. Many website designers like to accumulate keywords in navigation. This design method can also improve the rankings before. But with the development of search engine, the search engine is likely to punish it by cheating.
(4) breadcrumb navigation and sub navigation settings. The concept of breadcre navigation can be done by Baidu. The role of breadcrumb navigation is to tell users the location in the current website and tell users how to return. Breadcrumb navigation is the best way to guide users, usually use breadcrumb navigation website structure is relatively clear, this and similar sub navigation, navigation website architecture design to make more clear, increase search engines, and reduce the user's click distance to a certain extent. So the navigation and subnavigation of the bread crumbs are used as much as possible in the design of navigation.
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