Automattic give another useful plugin again. If you are self-hosted WordPress blogs, you will happy hear it.
Jetpack supercharges your selfâ€‘hosted WordPress site with the awesome cloud power of WordPress.com.
So, you didn’t need to be worries if some features didn’t available on your self-hosted WordPress blog. Using Jetpack WordPress plugin, you can use some great features that available on WordPress.com for free on your WordPress powered blog.
Currently 8 features has available on Jetpack WordPress plugin. You can download Jetpack plugin on this site