Hi fellow TUs. I'm happy to inform you that the new VirtualBox 2.1.0 finally added support for 64bit guests on 32bit hosts. So if you always sticked to arch32 because of lack of proprietary apps/lack fo time/fear of "those new things"/whatever... now you have no more excuses =) You can start contributing to arch64 today, just install a virtual machine! I'm doing it myself now ;-)
Cheers, bardo