OK to make this easier to keep up with I'm going to delete posts that aren't specifically questions or requiring replies, otherwise I'm never going to be able to answer.
Also, please bear in mind I've only had the game since Saturday, I have two jobs, a wife and other things to do, so I have not completed the game yet! Also remember that the game is not released in the UK or US yet so I haven't been able to test connection functions like infra-red, wireless, online or video chat!
Please do not get frustrated that I haven't got far enough to answer your questions!
@tristenj1992 Haven't got any triple battles yet. Wild double battles happen in dark grass though, which is cool. Will update this when I get triple battles.
@Deegan714 Yes, you can trade with older Pokémon games after reaching a certain point. Video chat uses the DSi or 3DS internal camera, yes - can be done locally or online.
@Sakeraf Looks like Black might be the least popular judging from what I've heard from other players. Flip a coin though, might be a good way to decide 
@bboy2970 Yes, I've played them all. Feels a lot newer than D&P, having all brand-new monsters during the story is a great idea and there are enough new moves to recreate that feeling of "oh, I have to learn about this". Same goes for evolutions etc.
@Doma As Rensch says, no VS Seeker in this one.
@LuigiTheGreenFire 'Cos 3DS isn't out yet.
@Bulbasaurus Rex Haven't used that move yet, sorry.
@turtlelink Which mole Pokémon is that?
@BellGoRiiing Yep, the health alarm is in there, but now it changes the music as well which makes things a little less annoying.
@007 Just whichever one's the strongest, of course 
@SphericalCrusher Music is similar but different tunes, if that makes sense. Towns are 3D but it's still from that same fixed viewpoint for the most part, but you can now enter a house FROM THE SIDE (YES!!) which flips the viewpoint to show you walking in. Not a huge change but a step forward.



