Mostly Twitter and initial word of mouth from our users!
Build in Public is helping us a lot to have an audience who follow our product updates and the journey we share via tweet. Also, we share our product in replies under discussion about bookmarks. This also brings us a few customers.
We are working on more channels - Indiehackers, Reddit and others.
Still mostly blogging and SEO, though now I'm also doing collaborative content creation with other creators in the space. I'd like to do a lot more guesting on podcasts and youtube channels, I think that's a great way to get the word out while providing value for free at the same time.
Free users come primarily from organic search results, and from word of mouth. Some users over time grow out of the free plan's limits (can take years), and convert to paid.
Today we are working with several marketing channels like Twitter, IndieHackers, Facebook, Instagram and others. Many of those customers are coming through Twitter and IndieHackers. Now, we're working on expanding our channels to SEO.
Unfortunately I haven't had time to focus on marketing since the launch, but I'm planning on picking it back up soon.
I mainly record my own videos and keep collecting traffic off the old videos posted by others.
I also passively explore other growth vectors (like Microfounder!)
Still some through Beeminder and various coworking rooms. Lots of referrals through Twitter, where I'm quite active. And still plenty of word of mouth, since people who love the system really love it and it's very unique. I've started making some YouTube videos but that hasn't taken off yet.
Now I focus a lot on creating blog posts. It's a good way to build up keywords and get organic users through search.