There is no clan system, but you can make an unnofficial one at the link found in the related links.
You cannot.
In littlebigplanet the community's definition of clan is more like a club, i have one called earth clan. clan in real life means family
LittleBigPlanet is played on the Playstation Network. It can not be played anywhere else on the internet
In the PS3 version I believe you must have internet access to "buy" it.
Yes, the word "Clan" means family. In the warriors series there are 4 clans: Thunder clan, Wind clan, River clan, and Shadow clan. On the game littlebigplanet (which is awesome) clans are clubs.
no
Because clans are overrated and there are myriads of the same type of clan as yours. You should either try a different idea or just join another already-made clan.
The PS3 with an internet connection
Because of your internet connection
no that's like asking if the PSP can play with the PS3 and they have different games
Because of your internet connection
You make a clan and call it ninja clan