Yep, we do.
It adds another layer of security to your account & ensures that when you login or make a withdrawal that its really you using your account.
This means that when you login on a new device, you will be asked for a code generated from your Authenticator App (like Google Authenticator etc). There is also two-factor authentication when withdrawing funds to your local bank account.
To set up 2FA, visit Your Profile Page and choose "Security Settings (2FA)" and follow the steps there.