Hello,
i think, that k2 is very usefull for my project, but i've a problem:

We've members, who could write articles (Sell and Buy),
at the articles, it's no problem to show contact informations.

But.
For non members i want to show the articles without contact / author informations,
a non member can take a look to the articel, and it would be the best, when there's
shown content like: "only members can get contact informations"

Somebody have an idea?

Hi Wolfgang Winter,

You can do a template override for the category and edit the item.php file , you can hide the Author's Block like this ...