It's probably not the deciding option, but the front-end code is only just over 20K because outside of a few images and a stylesheet there's very little going on.
A lot of Web Designers today tend to completely forget that page size matters, and that just because many of us have broadband connection it's no reason to throw JS and screen size images everywhere.
I didn't say that it was the underlying reason, but it's nice to note that even though the page looks nice it's also small and efficient, especially when you compare it to more established forums.
A lot of Web Designers today tend to completely forget that page size matters, and that just because many of us have broadband connection it's no reason to throw JS and screen size images everywhere.