The upcoming TYPOlight version 2.6.2 will include another core extension called "memberlist". It allows members to define public profiles which can be viewed by others. The module also supports sending personal messages (depending on the privacy settings). I have set up the beta version on typolight.org to show you how to use the module.
Define your public profile
On the "my personal data" page, you will find a new group called "public profile" where you can choose the fields that will be publicly viewable. On typolight.org, the memberlist (and thus your data) is only visible to logged in members.
List all members
After you have logged in, you will find an additional page called "Memberlist" in the drop-down menu. The module works very similar to the listing module.
I have also added profile links to the forum, so you can send personal messages without browsing the memberlist first.
The memberlist extension will be included in
version 2.6.2.