Patricia wrote:
Sorry to speak about wikipedia or wikicommon again but we should see this point : why wikipedia and wikicommon have a lot of contributors ? I think because they use completely the wiki.
I think the real reason is because the barrier to entry to become a contributor ti wikipedia and wikicommon is very low. In your example it happens to be a wiki, which by definition is the CMS with the lowest barrier to entry. Being at OCAL from almost the beginning, I remember Bryce always advocating for a low barrier to entry in both OCAL and Inkscape, we tried all the time to keep it low, but it appears we reached a limit.
Maybe the main page of openclipart should be a wiki... See http://commons.wikimedia.org
From my limited experience with ccHost, once having it working it should give a barrier to entry for new contributors as low as a wiki but with added features (ratings, sorting, etc.)
In the left menu of OCAL we keep the search bar, upload/download single clipart or package, news, faq in all languages... We give the possibility to users to modify pages in their languages (some won't be open for security), to add beautiful pages, to download and manage clipart (best colors, forms, metadatas) like we do in wikicommon.