In my opinion, it's possible
yeh as long as its with 2 different pads but you have 2 stick in the keyboard thingy that matches the headset into the same pad
You can play up to a maximum of 4 players on little big planet.
The dsi headset is the same as the DS/DS lite headset. It is purchasable at Toys R Us.
YES
NO
Yes.
no that's like asking if the PSP can play with the PS3 and they have different games
To play Minecraft on Xbox Live from the same console, both players need to have their own Xbox Live accounts. The first player can sign in to their account and start the game, then the second player can join by signing in to their account on the same console. Once both players are signed in, the first player can invite the second player to join their world, or they can create a split-screen session. Both players can then enjoy playing together in the same game.
No, if you buy the game of the year edition you get 18 extra story levels.
The same way as you'd use a piston
I'm working on the same thing. I'll update this answer If I find out how
If you look at the related links you can see that the games are not really the same and currently they are not available for the same platform so a person would need to have a PS3 or PSP and a PC to even compare playing both of them. LittleBigPlanet now has a sequel for the PS3 that is Move Compatible called LittleBigPlanet 2.