@mojinations So what would you use something like gist.io for?
Their own writeup identifies the main use case: I want to write something which is too long for a tweet but which doesn't belong on my blog. The situation doesn't arise often enough for me to bother setting up a Tumblr.
Of course one could simply use gists for this purpose. The advantage of gist.io is that the result is more presentable for consumption by a nongeek audience.
This presupposes that we are capable of writing for a nongeek audience.