[Adan0s]

Sorry, thought the keywords were interpreted as tags.

To add tags to the article look in the following class:

includes/class_taggablecontent.php

The following function is propably the thing you are searching for. Unfortunately I also don't know how exactly to use it. You propably need to create an entity of vB_Taggable_Content_Item, add the appropriate information (public static function create($registry, $contenttypeid, $contentid, $contentinfo = null)) and then use the following method:

public function add_tags_to_content($taglist, $limits)