I'm looking at the Orchard ASP.NET CMS for a blogging platform but I need to have the users register with some service (Google, Facebook, Twitter, etc) before commenting. Is this possible? I've seen the Disqus comment module but I need to keep the comments on my server. Anyone seen something like this?
The Orchard Disqus module has an option to synchronize comments with local database, so it should work for you. That module is one of the best comment-related ones so I'd stick to that, if I were you.