Jetpack for WordPress
Jetpack is a WordPress plugin developed by Automattic, the same guys behind WordPress.com. Jetpack allows you to:
1. Install over two dozen very useful plugins with one click (and update them – also with a single click).
2. Interact with millions of WordPress.com users, allowing deeper engagement with your site.
3. Improve site performance by taking on the load for these features and functions thus making your server’s load lighter.
4. Rely on the same folks behind WordPress.com for regular updates, enhancements, and troubleshooting tips.