Many online dating sites offer two types of services: free or paid. In order to use the free services, you will have only to register on the site using your email address and perhaps fill out your basic details. The availability of premium services depends upon your decision to use your credit card and pay the monthly fee charged by the site. Services like instant messaging, audio and video chat, pictures sharing, dating tips offered by a dating expert and access to certain data (who viewed your profile, who winked at you, compatibility test results, etc.) are usually available only for premium account holders.