Takes care of many small SEO related tasks related to URIs.

One of the main features:"Once enabled, an alias provides a nice clean URL for a path on a site. However Drupal does not remove the old path (eg node/1234). The problem is that you now have two URLs representing the same content. This is dangerous territory for duplicate pages which can get you

"The Pathauto module automatically generates URL/path aliases for various kinds of content (nodes, taxonomy terms, users) without requiring the user to manually specify the path alias. This allows you to have URL aliases like /category/my-node-title instead of /node/123. The aliases are based upon a "pattern" system that uses tokens which the administrator can change."

Gives replacement tokens. This module is used by so many other modules, you are sure to use it and learn it if you haven't already.

Force users to pick strong passwords.

"Provides one-way string transliteration (romanization) and cleans file names during upload by replacing unwanted characters.

Generally spoken, it takes Unicode text and tries to represent it in US-ASCII characters..."