So you're seeing thoughtful as a quality of the site's facilitating functions? That the site is thoughtful because it's considerate of each user? I've never really separated thoughtful from content but it seems like a good way to approach the site's mechanics. It might even be the opposite: it's easier to be a jerk to me if it's necessary. The same way a friend can get angry at you for your own sake. By all means, do shout at me if it's needed! What I like about hubski is that it creates communication not just in the single moment of a post, but it connects those comments on posts through time. I might easier respond to you on a post next week because I recognize your name, connecting that post with this one. A connection through time and posts. starts Doctor Who themeIt's difficult for me to be a complete jerk to someone like you (not that I'd want to be) because we've interacted a number of times here, there is context to our "relationship" that fosters a more thoughtful discussion. I think that is what is missing on other aggregators. -context.