Remember that thread a while ago that involved some mentions of JKHub? I figured I'd follow up on that; GUARD!AN gave me permission to post this and has been incredibly supportive.
Basically: JKHub opened up today. After over a year of preparations, we now have over 1200 mods online, along with a plethora of tutorials, and a links directory that includes JKASiege. We also offer a ton of services, including free webhosting, an events calendar, and redirects that allow people to connect to servername.JK3.in instead of IP addresses. We have a forum, too.
I'd love to get the siege community involved more as well, so if you feel like checking us out, it'd be much appreciated.

Here's an infographic we made to explain what JKHub is all about. Click it to view the full-sized version: