Widget Logic is a great way to selectively choose which widgets appear on which pages.  Very helpful for non-profits with sponsors whose contract is limited to certain services.

Here’s a screenshot of Widget Logic being used to limit a sponsor logo and text to a particular page: 

Here’s an overview from Widget Logic’s plugin page of some common phrases. (Full List Here)

• is_home() — just the main blog page
• !is_page( ‘about’ ) — everywhere EXCEPT this specific WP ‘page’
• !is_user_logged_in() — shown when a user is not logged in
• is_category( array(5,9,10,11) ) — category page of one of the given category IDs
• is_single() && in_category( ‘baked-goods’ ) — single post that’s in the category with this slug

There are endless possibilities with what you can do with theses.  Widget Logic fully supports WordPress’ conditional tags.

IMPORTANT NOTES:

1. Make sure you include a space between the parentheses and the single quotation mark.
2. If using a categorical condition (to display a widget just on a certain blog category) you may need to to install the Reveal ID’s Free Plugin so you can see the Category ID numbers on the admin page.
3. Keep it simple … if you find yourself adding dozen of widgets to customize your site, it is probably a sign that you may need a better WordPress theme that supports custom layouts and/or static content blocks such as Salutation

If you have any questions on this, scroll down and leave a comment or shoot me an email.