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You can add content to your site in two different ways: by upgrading existing Web pages and adding content to new URLs. Of course, new content should be found in the search engine indexing process, and you can use a number of measures to help search engines quickly focus on new content or new URLs. Like many new words in SEO, a Web page causes the search engine's attention to be code or get links. Because of the many conversations about links, the controversy over quantity is now more important than ever.
However, quality does not refer to internal links that lead to your site. Depending on their ability to quickly get your new content, there is a big difference between the internal pages. Recently, I studied new content on two separate websites as a customer. In the first Web site, the top new content is linked to a specific home page. In the second Web site, similar top new content is linked to the HTML map.
The time for indexing these two new content is dynamic. For the first site, half of the new content is indexed within 10 days. For the second site, it took Google one months to find links in the HTML map. For a second site, it still takes three months or more to complete the first site within 10 days.
The easiest way to inform a search engine of new content or upgrade content is to modify your XML map: The XML map is not an alternative to the effectiveness-oriented architecture. Simply include the new URL in the map may be indexed, or may be simply indexed, but a page without or several internal links may never be optimized.
If you add new content to the old URL, make sure that the value in the XML map reflects when the URL was upgraded.
If you develop a new URL, make sure that value reflects the time that the URL exists.
-Submit XML maps through different site tools, or the server can boot to the search engine when the map is upgraded. For example, this page provides Google instructions for changing the XML file.
As you know, to improve the indexing frequency of a Web page, you have to revise the value to make it regular. According to the sitemaps.org rule for value, you can change your favorite index frequency to 7 values.
I don't know why you use the value of "forever". If you look at sites and their XML maps at will, it's easy to find values. If your time has not changed within 24 hours, why search engines are interested in "weekly" value.
The time difference between buffering and indexing is significant. For example, the second buffer time mentioned in my first example is November 11. But a few days later we found the exact time. From November 12 to 13th, the text buffer is still displayed as September 30. Until 14th, the buffer time was shown at number 11th, which meant that the Google buffer page had a three-day jet lag from Google's telling us about the buffer time.
(Original: November 25, 2009; Compiling: Song XI)