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The default WordPress search is limited because it gives you results by date and not by relevance.

Better Search replaces the default WordPress search engine with a more powerful search engine that gives search results relevant to the title and content of the post. This means that visitors to your blog will find will find what they are looking for quicker than if you didn't have Better Search installed.

Custom post type support means, visitors can search through your site for more than just posts.

The plugin is packed with options to allow you to easily customise the output. You can also fine tune the results by assigning a greater weith to either the title or the content.

Better Search supports templates for perfect integration into your blog template. Template for Twenty Eleven theme included in the package.

Additionally, the plugin also tracks the searches and you to display a "search heatmap" of the most popular searches. Support for WordPress widgets will allow you to easily add this heatmap to your theme's sidebar or footer.

Features

• Automatic: Once activated, Better Search will automatic replace your default WordPress search with more relevant search results
• Relevance: Search results sorted by relevance automatically sorted by relevance. You can also turn off relevancy based searching, in which results are sorted by date
• Control the results: Fine tune results by changing the weighting of post title and post content. Turn on BOOLEAN search to override the default NATURAL LANGUAGE search of mySQL
• Popular searches: Find out what visitors are searching for on your blog. Display a list of popular search terms (daily and overall) on your blog in the form of a heatmap. Widget support for easy integration in your theme
• Customisation: Support for a template file for perfect integration into your blog template. Alternatively, just input your own CSS styles in the Custom Styles tab in the Settings Page. Check the FAQ for more information
• Supports cache plugins: Works with caching plugins like WP-Super-Cache and W3 Total Cache