For the WWW 2007 Workshop on Collaborative Construction of Structured Knowledge, we have submitted a fairly comprehensive overview of our current ontology maturing research – and got accepted. The paper combines our activities in the EU project IMAGINATION on so-called Imagenotions and our social bookmarking tool SOBOLEO (developed with in the project Im Wissensnetz), which will also be evaluated and presented by Valentin as a demo at the same workshop.