Get a DSi or DSiXL - They can get facebook and stuff but DS's and DS Lites can't so no
The Nintendo DSi has a Facebook feature, where when you take a picture, it sends it to your Facebook profile if you have WiFi access.
no you can't play dsi games in ds but you can play ds games in dsi.
you can play game boy games a normal DS but not on a DS light or a DS I.
Yes you can play Nintendo DS games on a Nintendo ds lite.
Yes. The 3DS can play DS games and DS Download Play with them.
You cannot store or play videos on a DS.
yes, it can
yes i can play game on facebook
Normally, you can play new DS games on old DS. But if the games says for DSi only, or for 3DS(will be pubulished soon) only,the it can not play on old DS.
you can play Nintendo DS games on a Nintendo DSi (i suppose this was what you meant with DS you)
There is no such thing as a DS Lite game they are all just DS games. So, yes, you can play them on the old DS.