This week, I learned something new about the sidebar widgets. While I’ve long noticed a “visibility” setting within the widget creation screen, I had no clue about its nuances. Turns out, you can set up conditions. Example: if a visitor is on the About page, hide the About widget. That’s all handled through the convenient drop-down menu within the widget-creation area. Cool!
Source: Blogging: Intermediate Customization | The Daily Post