Is Substack the New Blogging?

​Substack is a platform where independent publishers can easily earn money from their writing with paying subscribers.

Substack allows publishers to collect payments from subscribers and publish their content online and in email format.

If you do some googling or twittering, you'll see that Substack is pretty hot right now. They got some $15 million-ish from Adreessen Horowitz and it feels like publishers are flocking there.