Ideally, a Web site indexer should know how to modify the HTML code of Web pages , in order to create hyperlinks. Updating is an important issue for both print and online indexes. However, updating a Web index typically involves incremental maintenance. Also, existing content can be moved to a different page or directory within the site. In order for a Web index to remain useful, it must keep pace with the site's evolution.
Few things are more frustrating to a user than broken or outdated links in a site's own index.
Consequently, there should be regular, frequent communication between the site's developers and the indexer. Whenever significant content is modified, moved, added, or deleted, the indexer should be informed. Then, the indexer should immediately update the index to reflect the current state of content on the site. Most people know what an index is, from having used them in printed books. However, if that link leads to a different type of guide it might cause confusion, frustration, or disappointment.