Should I use a 32 or 64 bit server?
What are the limitations of using a 32-bit linux server?
Is it worth the trouble to setup a 64-bit server if the site will not be huge?
Just to clarify, this would be a dedicated server for running askbot.
We're talking about roughly 1,500 users (not concurrent!) and maybe 10K questions.
I suspect that 32-bit would be fine for my particular scenario