You actually can explore a whole year at a time by selecting "-All-" for the month. Originally I had the ability to do the same with year, but it was painfully slow even with heavy caching. Something to revisit!
Thanks for the feedback on the page glitchiness as well. This was my first go at it with KnockoutJS, so I'm sure I did a hundred things wrong. I learned a lot, though!
If you like this, you should check out Hacker News Books (http://hackernewsbooks.com/) which was originally posted (https://news.ycombinator.com/item?id=12365693) here on HN by its creator, leandot. It was my inspiration for this project. I fell in love with it and wanted to do something similar for Reddit.