webform_confirm_email is a simple addon module for the webform module. You can define webform emails that are only sent when the user klicked on a link that he/she got in an other webform email. You can use this module to implement a double opt-in.
NOTE: This module is no longer supported. Please try Display Suite if you are looking for similar functionality in Drupal 7.
This module enables you to use Panels to handle the display of Node Teasers. Node teasers get a page similar to Page Manager, and can create variants to change the layout of the teasers based on any Panels selection rule. This enables different layouts to be created per content type,
Theming
Panel content can be sent to the $content variable in node templates. You may select "Replace node template" to use the included node-teaser-panel.tpl.php that only contains the DIV node wrapper and <?php print $content; ?>. This way, you can have Panels handle the display of the entire Node, or just the "inside" of the teaser, ie. $content in node.tpl.php files.
Panels Teasers 2.0 has been re-written to use Page Manager instead. This means that instead of Mini-Panels, you get a Page Manager-style "super-panel" (with Variants).
This API exposes the so called driven properties, which are aimed to map any type of node properties (i.e. title, body, taxonomy, CCK fields, workflow, etc).