XF 1.1 Homepage-Link at User-Profile and Signature only when paid


Well-known member
My users are regularly entering their Homepage-URL and E-mail-addresses into their Profile-page at the "About You"-field or "Recent Status"-updates and are also putting multiple Links in their Forum-posts towards their Homepage-URL.

So literally users at my Forum only register in order to plaster my Forum with their URLs and Hotmail-addresses.

I am wondering if it is possible via XF-default or via an Add-on to have the following user-information only showing when the member has payed?

- Homepage-URL showing at User-Profile
- Homepage-URL and E-mail in Signature

Is there any other way for avoiding this, or better say to "monetize" on this user-behaviour?

How are you guys dealing with this? Do you just don't care if members posting their URL and E-mail all over your forum?

Many thanks!