I worked on making a prototype for an extension supporting inline comments on wiki artciles. This was implemented using the Open Knowledge Foundation Annotator (OKFN) library. The project can be tested [1], switch to the view annotations tab, select a particular text and leave an annotation. It also supports the logged out users. But currently the update and destroy of annotations is restricted only to the user of the annotation since we are not having any history of annotations.
The prototype phase of the project is over, it was a fun working around with the community and the mentors. The future implementation includes the history of annotations, internationalization support, may be a change of frontend, etc. Overall it was nice working around with the community and the mentors! Thanks for your support :)
Read my blog post[2] and project updates[3] if you are interested.
[1] http://annotator.wmflabs.org/ [2] http://richajain-annotator.blogspot.in/ [3] https://www.mediawiki.org/wiki/User:Rjain/Gsoc2013/Project_Updates