Where the kids are posting comics these days

Here's a question for all of you: where and how are people posting webcomics these days?

What I'm doing right now is posting pages to this blog, as well as (in Sun-Cutter's case) posting to Webcomicsnation.com, which as far as I can tell isn't really used very much anymore. However, I've been out of the loop on webcomics for a number of years, and I'm not really sure how it's being done nowadays.

When I first got into webcomics, central aggregate sites like Webcomicsnation and Keenspace were used by a lot of people. Are these still a thing, and if so, are there any new popular ones that I should know about?

I've heard of Comicspress, but don't know how easy it is to install and use (and you need a Wordpress installation underneath, right?).

What about banner/link exchanges and other ways of introducing new people to the comic? Do people post long-form comics on Tumblr -- is that even possible?

I am all ears for any suggestions that you have.