Interacting with your customers on a personal level can create some serious loyalty to your startup.

As odd as it might sound, using emoticons at the right time can increase the customer's rapport with you because your response won't be boring or misinterpreted, it's like the online equivalent of body language! When possible, use their first name in your reply. Use your first name when you sign off. Let them know they're engaging with a human.

The happier they are, the more they will love dealing with your startup.