WordPress plugin Repository has a new plugin that lets you make website migration from one domain to another very easy. So next time you need migrating your WordPress site to a new domain, all you will be needing to do install and activate the plugin Automatic Domain Changer. After activation visit your admin area Dashboard -> Tools -> Change Domain (remember to keep a backup for safety).
Thinking of migrating your blog to WordPress, here are 5 cool plugins that can help you doing that in a better and easy way possible and ofcourse I am takling about WordPress.Org self hosted blog not WordPress.Com. If you are migrating your blog from Blogger then you must read this post.