Yes, the PSVita has a camera and you can take videos, though the resolution is not good, it is only 0.3 megapixels.
Yes, it has two cameras.
No, it takes its own PSVita game cards. It is not compatible with PSP UMDs, but an increasing number of PSP games are being made available on the PSVita's PSN store.
The PSVita is not region locked, a US PSVita can play an EU PSVita game as would be bought in the UK.
Yes, the PSVita has physical games, small cartridges called PSVita Game Cards. The PSVita has a slot at the top for them.
No, at this moment in time, is it not available for PSVita.
Yes, the PSVita's screen is HD.
Yes, the PSVita was released on the 17th of December, 2011.
Sony hasn't stopped making the PSVita.
No way - psvita is the best, in my opinion.
Yes, the Youtube app for PSVita is free.
The SSID is not something to do with the PSVita itself, it is the 'name' of your wireless network. So when the PSVita wants an SSID, tell it to do an automatic scan, and select your from the list.
I would suppose so, because the fact that you can download psvita content. Other than that I'm not sure of.