Ahaa... Paid Subscriptions. Should be and depending on the subscription the user will be upgrade to xxx usergroup. What benefits he'll have as extra depends on the usergroup permissions of that group. But as the first version should not has any related to Ads features, I think that you've to wait for the next upgarde. Surelly I'll add support for Ads. In a short should be something, born from the marriage of Forums and Facebook.