Feedback on podcast/newsletter discovery tool

Greetings Indie Hackers! I've been working on a tool for helping visitors find new podcasts and newsletters, and I wanted to share what I've been working on and get an opinion or two on page layout, design, etc.

Right now the only part I feel real confident about are the cards themselves. The header was thrown together on day one and will need to be done-over, but I wanted to get something up there.

What do you guys think?
What else would you want to see on a page like this?
Any examples of design elements from other sites for inspiration? Thanks!