Question
We submitted a sitemap several months ago, but our site is large enough that generating a new one is time-intensive. How important is it for Google/Bing/Yahoo to have a current sitemap, or can they crawl the site appropriately once the initial one is submitted?
Answer
It is essential to provide Google with a constantly updated sitemap, especially for large sites. If the sitemap generation takes a long time you can divide it into several pages, containing a limited number of links, and update only the section that includes newest and updated contents.
