Just found about about this site today and I really like what's going on here. However, the site is not very aesthetically pleasing in my opinion. That being said, I think a few small changes could go a long way.
I looked at the project on github and didn't really see any issues related to look and feel of the site. Maybe this is very low priority right now, but I do see this as "low hanging fruit" that could help give a good impression to first time visitors and new users.
Specifically, I think that changing the home banner, the logo, and the "Fun/Insightful Icons" could go a LONG way.