This post talks about slate without offering a single clear example of 'how' it is better than spectacle or others... JavaScript- great. But what can you do wit

This post talks about slate without offering a single clear example of 'how' it is better than spectacle or others... JavaScript- great. But what can you do with it? Then when you follow usepanda the same poster has made 3 posts in the last 3 weeks where he extols the virtues of he other 2 window managers he mentions, spectacle etc. What is it? One better than the other? An honest opinion? Or some gameification of search engine results?