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The Complete Idiot's Guide® To WordPress by Susan Gunelius

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Primary Differences

Many people are confused by the two different versions of WordPress, so don’t worry if you’re one of them right now. Most other blogging applications have just one version, so why does WordPress have two?
 
Think of WordPress.com as the WordPress-hosted version of the application and WordPress.org as the self-hosted version of the application. So when you create a blog using WordPress.com, you only have to worry about writing and publishing content. However, when you create a blog using WordPress.org, you need to find your own web host to store and serve your content.
 
Let’s review some more differences between WordPress.com and WordPress.org, so you can better understand what each offers.
 
Cost: Both WordPress.com

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