I understand that the community only allow "follow" feature for topics or people. I am looking to have "follow" feature for knowledge articles published on user community for users to follow and receive updates when certain fields change. Basically, I am considering using articles to build "known issues"  type interface.

Has anyone built the "follow" feature for articles in community? Looking for pointers on what might be my options if I am willing to spend some custom development effort to get this feature.

Thanks,
-Jimy Shah

Service cloud web to case and email to case. Customers will sometimes send full credit card data.  This is then stored on sfdc and is a compliance issue.  Has anyone built a solution to remedy this?