1, web page use framework: The contents within the frame are usually not within the range of search engines.
2, too much picture, too little text.
3, submit the page to another website: The search engine may completely skip this page.
4, submit too frequent: 2 times in a month, many search engines can't stand, think you are submitting garbage.
5, the website keyword density is too big: unfortunately the search engine did not explain how high the density is the limit, and the description of 100 words is generally considered to contain 3-4 keywords.
6, the text color is the same as the background color: the search engine thinks you deceive it in the stack of keywords.
7, dynamic web page: The content management system of the website is convenient for webpage updates, but it brings trouble to most of the search engines. Many search engines do not charge a dynamic page, or only the first floor page will not be taken down. At this time, consider using the Rewrite technology using the web server, map the URL of the dynamic page into similar formats similar to the static page URL, and the search engine misunderstand is a static page, it will be charged.
8. Website Transfer Server: Search Engine usually only recognizes IP addresses, transforms hosts, or domain names, the IP / DNS address changes, then you have to resubmit the website.
9, free website space: Some search engines refuse to index from free space, complaining that many garbage, poor quality.
10. When the search engine crashes, the website is not online: if the host is unstable, this may happen. Worse, even if the website has been included, it is not online when it is re-captured, and the website will be deleted.
11. Erroidly block the Robots index website: There are two ways to block the Robots: There is a simple text file in the root directory of the host server; a web page contains a Meta tag.
12. A large number of web pages entering Flash, DHTML, Cookies, JavaScript, Java production or password, and the search engine is difficult to extract content from this page.
13. Search engines cannot parse your DNS: New domain names need to be taken after 1-2 days to take effect, so don't register the domain name immediately submit the website.
14, the website's link is too low: the link is too low, the search engine is difficult to find you, then consider logging in to a well-known classification directory, or do more friendship links.
15. Server speed is too slow: the network band is small, the web download speed is too slow, or the web page is too complicated, which may cause the search engine to pay for the text content.
16, Keyword question: If the text does not appear in your Meta tag, the search engine may think is a spam key.
