This plugin will convert every word that occurs in a post title or content into a term (tag). By default the plugin will add these terms to a new taxonomy called “words”. Optionally, the terms can be added to the “post_tags” taxonomy, used for normal tagging in WordPress.
The plugin provides the option to create a so-called stop list. Words in this list will be kept (or even removed) from the taxonomy. This allows authors to ignore meaningless, but often occuring, words like ‘a’ or ‘the’.
This plugin makes sure that the tags will actually cover a blog’s content. This is great in combination with tag-clouds as the tag-clouds will better show what the blog is about.

Text2Tag

This plugin automatically converts title and post contents to tags.

Bill Erickson

This plugin ONLY works with the Genesis theme. Do not install if you are not using Genesis.
This plugin lets you easily remove the page title from specific pages. Don’t want “Home” at the top of your homepage? Activate, then edit the homepage and check “Hide”.
You can also set sitewide defaults. If you don’t want page titles on any pages, go to Appearance > Customize > Theme Settings > Title Toggle and check the appropriate box. Once a post type has the default set to remove, when editing a page you can selectively turn on that page’s title.
See <a href="https://github.com/billerickson/genesis-title-toggle/wiki" rel="nofollow ugc">the wiki</a> for information on extending the plugin: 
– <a href="https://github.com/billerickson/genesis-title-toggle/wiki#use-on-posts-or-custom-post-types" rel="nofollow ugc">Use on Posts or Custom Post Types</a> 
– <a href="https://github.com/billerickson/Genesis-Title-Toggle/wiki#integrating-with-a-custom-theme" rel="nofollow ugc">Integrate with Custom Theme</a>

Genesis Title Toggle

This plugin ONLY works with the Genesis theme. Do not install if you are not using Genesis. Turn on/off page titles on a per page basis, and set site …

Text2Tag vs Genesis Title Toggle