diff --git a/placeholder/footer b/placeholder/footer
index 17b83c2..0649a99 100644
--- a/placeholder/footer
+++ b/placeholder/footer
@@ -1,7 +1,6 @@
 
 <div class="footer">
-	<!-- TODO: add real link! -->
-	<p>-- a <a href="http://senselab.org">Sense.Lab</a> project -- <a href="index.html">Impressum</a> --</p>
+	<p>-- a <a href="http://senselab.org">Sense.Lab</a> project -- <a href="http://senselab.org/component/option,com_dfcontact/Itemid,29/">Impressum</a> --</p>
 </div>
 
 </div>
@@ -14,15 +13,14 @@
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
 <Work rdf:about="">
    <dc:type rdf:resource="http://purl.org/dc/dcmitype/Text" />
-   <license rdf:resource="http://creativecommons.org/licenses/by-nc-sa/2.0/de/" />
+   <license rdf:resource="http://creativecommons.org/licenses/by-sa/2.5/de/" />
 </Work>
 
-<License rdf:about="http://creativecommons.org/licenses/by-nc-sa/2.0/de/">
+<License rdf:about="http://creativecommons.org/licenses/by-sa/2.5/de/">
    <permits rdf:resource="http://web.resource.org/cc/Reproduction" />
    <permits rdf:resource="http://web.resource.org/cc/Distribution" />
    <requires rdf:resource="http://web.resource.org/cc/Notice" />
    <requires rdf:resource="http://web.resource.org/cc/Attribution" />
-   <prohibits rdf:resource="http://web.resource.org/cc/CommercialUse" />
    <permits rdf:resource="http://web.resource.org/cc/DerivativeWorks" />
    <requires rdf:resource="http://web.resource.org/cc/ShareAlike" />
 </License>