Here is a quick tip on how to hide Adsense ads appearing on the sidebar in WordPress.
1. Download Conditional Widgets plugin from:http://wordpress.org/extend/plugins/conditional-widgets/screenshots/
How to locate the form for you to choose which pages and/or categories the widget to be hidden or not to be displayed.
1. Log in to your WordPress blog.
2. Go to 'Appearance' and select 'Widgets'.
3. From the Sidebar, select which item you choose to hide. Click on the small inverted triangle symbol to drop down or open it.
4. You can see the 'Widget Display Control ON' just above 'Delete | edit' selection.
5. Click on the small inverted triangle and it will drop down a menu for you to make your selection.
6. Once finished, click 'Save' blue button below