We can trap particles for a real amount of time. We don't need to slow them down. But just because you asked, we can slow down the speed of light in a vacuum by first putting it through a different medium.
I think there's still disagreement on whether consciousness can enter a Von Neumann chain in this case. But yeah, basically the interpretation of this experiment is that nothing went back in time- only observing what happened collapsed the wave-function that included not just the photons, but the scientists themselves.
Well most cables are good enough in the $2 range, but I wanted to chime in that coax and optical audio is passive and unidirectional, so there is no parity checks. If the receiving clock isn't right, there can be jitter. That's not usually a problem with the cable, but it can be. (Unlike TCP/IP which resends bits if stuff goes missing)
I used to run a site that integrated multiple different theme servers and a central ebay-like store where you could buy/sell materials gained in each server. Gold was the standard of currency. It was a lot of fun. I ran out of money, so the site remains but the servers are offline. Check it out, maybe I'll revive it: http://www.mineverse.com/
Google Voice commands allow that format. When I'm on the road, I never type- I click the microphone and say "navigate to mcdonalds" which it then uses gps to determine which mcdonalds i'm looking for. Or "navigate to 22 somwhere st. "
Here's the full list: http://www.google.com/mobile/voice-actions/