Views Bulk Operations

A must learn module: "This module augments Views by allowing bulk operations to be executed on the displayed rows. It does so by showing a checkbox in front of each row, and adding a select box containing operations that can be applied. Drupal Core or Rules actions can be used."

http:BL

From the project page, "Implementation of http:BL for Drupal. http:BL can prevent email address harvesters and comment spammers from visiting your site by using a centralized DNS blacklist. It requires a free Project Honey Pot membership. This module provides efficient blacklist lookups and blocks malicious visitors effectively.