There are additional features for full paid members which allow you to reveal more of your personality, including a video profile and your personal diary. (comparethedatingmarketplace.com)
The first type offers you a free trial, usually with full paying member access for a limited time. (datingsitesreviews.com)
Send an email to the admin of each website, asking how many full paying members they have in their database. (uberant.com)