Peicemeal Information Technology Along My Interests

See this other page about my dream website that combines these kinds of things.
Other ways they might be "not quite there yet":
* offline/individual VS social media
* just a place for users to interact VS doing calculations for the users
== Stuff like reason chains ==
Some "debate" websites.
Some "Non-Linear Note Taking" things seem somewhat related, but they don't calculate values. Places like remnote, athens, roam research.
Some advanced tools for professional academics etc.
== Ratings, evaluations ==
Lots and lots of basic ratings websites (Amazon products, Yelp, movie ratings...)
Some more like it, such as that couch surfing website and I think Airbnb.
(there's also forecaster betting, which is related i guess, but also related to reasoning)
== Matching and alignment? ==
Not sure there's much beyond the basics like LinkedIn, Meetup, facebook groups, and dating websites?