It is common when building Drupal sites to create "small" content types that are used as pieces in pages, and that are never meant to be displayed on their own pages. It would thus be desirable to excluded them from Search.
To exclude node types from search results, site builders can make a small module with a query alter. They can look for queries with the 'search_node' query tag, and implement hook_query_TAG_alter() to alter the query.
To exclude node types from being added to the search index at all, it would be useful for the NodeSearch plugin to be configurable this way.
Make the NodeSearch plugin configurable so that it can exclude certain node types from the index.
User interface changes
New config option for NodeSearch will be added.
Original report by asimov
The Drupal search module currently includes all node types in its search results. A feature request to add capabilities to exclude some node types. Please see http://drupal.org/node/82348#comment-161699 for more info.