Hey Gabriel, thanks for submitting a bug, it has been fixed now. Let me know if you have any other issues.

Hey Chad, this is now implemented, you can subscribe to the feed from the article page. Let me know if you have any other suggestions/ideas.

Hey Thomas, you can now move back and forth using left and right arrows on your keyboard. Let me know what you think. 

When I have more keyboard shortcuts I will implement the overview on ? key press, I have that in mind, great idea.

This has been implemented now. You can use left and right arrow keys to go back and forth.
Let me know what you think.

We are working on making the site responsive. Stay tuned.