Tabbed interfaces are the most common on newspaper type website where they can save a lot of vertical space and make it look less cluttered.

Accordion type tabs were made popular by Apple, who use them for grouping different types of content in a very narrow sidebar. They are particularly useful if you want to have longer tab titles or more tabs that would not otherwise fit into the given horizontal size. Tabbed Widgets can create tabs for you easily. The following are the main features.

• Use other widgets for the tab content and specify a custom tab title.
• Make tabs rotate in a set interval so that they become more noticeable and prominent.
• Set a random start tab on each page load so that all tabbed content gets equal exposure.
• Make unlimited number of tabbed widgets that can be then used as regular widgets under ‘Design’ > ‘Widgets’.

Pricing: Free
Requirements: WordPress 2.5+
Source: http://wordpress.org/extend/plugins/tabbed-widgets/