I've added another layer of caching to BlenderNation which should result in a noticeable speedup of the site. A Varnish server now caches all pages, which makes delivery for any non-logged in users almost instant. As a result, my main webserver has it a lot easier, which will make any logged in actions faster too. I'm still tweaking it and I might have missed some settings. Please let me know if you feel the site is faster now, and also if there are still any problems I missed.
In combination with the CDN I added earlier this week, this should really make a big difference!