The biggest difference with hubot and other bot is that you don't need to setup a server, install, update the bot. It's a saas bot.
So it's damn easy to add it to your current Slack team.
The new package system was one of the last missing part for Meteor 1.0 so it's really a good news. And Isobuild, isopack are really promising. Can't wait to see the result!
I created a project called http://dok.io
The goal is to easily create and forget (like in gmail) small piece of info (dok). The dynamic search helps to find them if needed later.
Of course it's collaborative (like a wiki) and everyone in the team can add/edit just by typing in the dok (like in asana), no edit button or whatever. Oh and behind, it's HTML5/JS with Meteor.