Protect Your Email: Use Google Authenticator
The Google Account has gotten more important in recent days. Not only does it hold email, it now holds your calendar, pictures, and documents. Google provides two-factor authentication to make sure only someone with access to your phone can log in to your account. It provides an app called Google Authenticator that turns your smartphone into a security key don. This prevents most brute force attacks. Also, if you lose a mobile device, you can revoke the passwords linked with that device to prevent ongoing data loss. There is really no reason to use it if you value your Google Account.
While you're at it, if you use Google Apps, set up SPF and DKIM to prevent hackers from spoofing email as falsely coming from your domain.