Is there a reason why speaker connections, like binding posts, are black and red?

The last two times I stayed at a hotel with my family while on vacation, we were dismayed that we couldn't hook up the portable DVD player or laptop computer to the hotel TV, in or …

I just got an iPhone 3GS. It's sweet. I especially like to use it on the train while on the way to work. Anyway, while my family has an Apple TV in our main TV room, I'm wonderi …

Is it to provide extra content or for security or something? Can I watch a blu-ray without an internet connection?

If I connect a Sky Hd box to my TV using component, what is the maximum resolution I will be able to get?

Is there a simple way to watch movies on my PSP through the TV?

Assuming there isn't some downgrading going on because of HDCP, what resolution can a component connection support?

Is there any reason why the RCA video connector is yellow other than to match it to the right socket? Is the lead physically any different?

I recently got Sky+ HD fitted downstairs, and before that I always had Sky linked to my bedroom upstairs using the RF out socket on the box which went to my bedroom TV. Now I can' …

I was aware of DVI-D, but I just came across a reference to DVI-A on this site. What's the difference? Inquiring minds want to know. :-)

Seems to me it's just a way to make things more expensive/desirable. What benefit does gold plating connections really give over say steel, copper or aluminium?

What connectors are needed and what resolution can be achieved?

Do I need to take the TV off the wall to plug in a new lead? Can I get a wall mount that sits flush but swivels out to allow me to plug things in?