@aaronpk I think I'd need to know the org's mission first.
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Diaspora's still around. Identi.ca (not to be confused with Friendica) became Status.net which is now Pump.io but if you want to try it out you have to visit Ephemeral Me. There's Tent.io which you used to be able to try out at Tent.is but is now Cupcake.io. Diaspora and Tent considered getting together but decided not to. Still with me? Good, because Status.net is now part of GNU Social. There's Feedly which became the Stream Framework with SaaS commercial partner GetStream.io.
Echochamber.js is a third-party script you can install to add a simple comment form to your blog post or website. why not just use disqus? Because then there'd be a chance that someone would read the comments. You might have to read those comments. You don't want that. When a user submits a comment, echochamber.js will save the comment to the user's LocalStorage, so when they return to the page, they can be confident that their voice is being heard, and feel engaged with your very engaging content. It does not make any HTTP requests. Since LocalStorage is only local, you and your database need not be burdened with other people's opinions.