Further to last post, one other thing i forgot to mention that i expect from 1999.io : 

3. The environment should support civilized discussion within its community of users. 

Easy enough to say, of course; much harder to achieve in practice -especially that "civilized" aspect, which prompted even such a one as Jeff Atwood (of StackOverflow fame) to publish his "Universal Rules of Civilized Discourse," going on to build a whole SAS business on that foundation.

Still: i think that -as Dave has pointed out, both in words and by example over these many years- the very fact that we publish in our own space on the web, and by that token OWN our words in a very real sense, imposes a burden of accountability on us that tends to reward civilized behavior, and punish its antithesis. 

So: i guess that all 1999.io really needs to do (though it could always do more*) is provide a transparency mechanism whereby users can see who is liking and/or linking to their posts, such that it is easy to follow the the track-back to publishers/ posts that are so related. 

* If 1999.io were to go farther, enabling inclusion of comments via 3rd party softwares (such as Discourse), that might be cool... But if this were to add any complexity for users that might not want it, then forget it, i would say. Anyway (per previous paragraph), it's not really necessary, if this minimal provision for discussion can be included.