Linux thread

Linux is such an excellent operating system!
I especially like having my choice of window manager.
Right now, I am running FVWM.
What do you like or dislike about Linux?

I need to know if smoothwall linux supports multiple WAN interfaces... or if any Linux NOS does? It doesn't have to be dynamic load balancing, just general port/ip forwarding rules to assign different computers/types of traffic on one WAN interface or another. Any info is helpful, as I am a Linux/networking ch00b.