ceslava

Have you tried to find out which one from your tags was created first? Or Which term for your custom taxonomy was last created?
Last one happens to me, I had so many terms on several custom taxonomies that I wanted to know which ones were last created. The problem is that there is no record of the publish date on the wp_terms table from the WP Database. But since IDs are auto-incremental we can use this field to order by date our terms.
So I added an extra sortable column with the ID term to your taxonomies (Tags, Catgeories or Custom Taxonomies).
By default Tags and Categories pages will have the extra column. If you want to add the extra ID / Date column to your custom taxonomies go to the plugin settings page at Settings -> IDATERMS.

IDATERMS

Add an extra column with the ID term to your taxonomies (Tags, Catgeories or Custom Taxonomies) so you can sort your terms by date.

Aaron T. Grogg

This plug-in limits the classes WordPress added to navigation menus to only those desired by the Theme owner, 
adds a unique ID to each <code>li</code> and removes any empty <code>class</code> attributes.
More about this plug-in can be found at: 
http://aarontgrogg.com/2011/09/28/wordpress-plug-in-navigation-menu-ids-classes/
Please let me know if you have any questions/suggestions/thoughts,
Atg

Navigation Menu IDs & Classes

At least some aspect of this plugin seems like it should be available in WordPress core. 
I understand the rationale for menu items having menu-item-ID, but it's pretty practical for them to have the slug in there, as this plugin provides.
Suggestion for plugin feature - offer option for slug prefix.
Like if I have a menu item "updates" I may use the class "updates" elsewhere, but class "menu-item-updates" would target the menu-item for sure. Of course I can currently use double selectors.



1 for inclusion in core

To reduce the extraneous WordPress classes and add unique IDs to navigation menus.

IDATERMS vs Navigation Menu IDs & Classes