As part of GSOC project "Catalog for Mediawiki Extensions" we have been successful in syndicating User ratings from WikiApiary.com to Mediawiki.org so that people get a better judgement on the utility of the extension. You can see it in action is this edit as the parameter "WikiApiary Rating" here https://www.mediawiki.org/w/index.php?title=Extension:ConfirmEdit&diff=prev&oldid=1099093
I am not sure what is the best way to get this in action so that ratings are visible on the pages in terms of stars. Wikiapiary has done it using Semantic Rating Extension. Please help me on how to modify the extension template and make the system work in best interest of users of mediawiki. Thanks.