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WordPress 3.7 Complete Third Edition by Aaron Hodge Silver, Karol Król

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Chapter 9. Developing Plugins and Widgets

Earlier in this book, you learned how to install plugins. Plugins are essentially a way to add to or extend WordPress's built-in functionality. There are thousands of useful plugins (at the time of writing, the official counter at http://wordpress.org/plugins/ shows over 27,000 plugins) available from the online WordPress community, and they perform all different kinds of functions. In the earlier chapters, we installed plugins that catch spam, allow FeedBurner to track RSS followers, back up your site, give you basic SEO features, and more. You can also get plugins that manage your podcasts, create a Google XML site map, integrate with social bookmarking sites, track your stats, translate into other languages, ...

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