Home automation protocols

[sethg-Dp9fwfP21SfQT0dZR+AlfA at public.gmane.org (Seth Gordon)]

Tom Metro wrote:
> I know there are a few users of home automation devices on this list. At 
> the last meeting someone suggested a possible use for the hacked Western 
> Digital NAS might be as a home automation server.
> 
> So of the emerging new home automation protocols, what's your 
> preference, and why?

I am also interested in what options are out there.  For years I've been 
using Firecracker and bottlerocket to control my house lights and air 
conditioners with X-10, but as long as I'm using X-10 I can't switch my 
lights over to CFL or LED bulbs.  The times I've googled around for 
alternatives, it seems that every other system is pitched to people with 
a lot more disposable income than I have.