The death needs to make sense in the context of what the victim knows, where the victim is and the plausibility of the death's scenario. Otherwise it'll just be a mere heart-attack.

Such as you can't write someone who's in jail to die in front of somewhere else that cannot be reached in the time-span of the person's death time nor can you write someone off to death in a car accident when there's no car around anywhere nearby.

Yes and...No. Because his real name is

He dies. Simple as that. Unless the user of the Death Note is a shinigami of course.

It does flow differently in their system of time calculation, proven from how Light's lifespan doesn't seem to be in day/month/years system. However, it is never shown if time specifically flows differently there compared to human world, however it's not like it makes any difference for them since technically shinigamis can live forever.

I will answer as best as I can, If I made A Mistake, people please let me know.

1- Is not known, because L name was never really revealed in the Manga, I heard that a side story will be made were its going to be revealed. I also doubt it, I think is just the First letter of a nickname he has(I do think the Nick Name is in english) , like two to other character that will be presented in the future.

2-Of course.

3- Nothing was said about that, and I really doubt there is a difference.

Hmmm, when this was revelead???? Not to mention you are aware that Mellow was not M real name and Near was not N real name. So maybe this Lawliet name is the same for L.

L's real name was never revealed in the manga storyline, but recently an extra book was released (How to read or something like that) which gives his full name. There was a thread which had that info, I'll dig it up if you want.

There's no reason to think that they won't, imho. If the user pictures himself/herself while writing their own name, it stands to reason that they will die. This is speculation on my behalf though.

Based on the scanlations and Viz's translation of the scene (I've yet to watch the fansub), Ryuk uses the word 'convert', so it seems like time is calculated differently. The other thing is that Ryuk also mentions how if a Shinigami kills someone at 40 years of age when they were supposed to live until 60, those 20 years of human world time get added to the lifespan of the Shinigami. So it does indeed seem like it is simply a difference in calculating the time rather than it flowing differently.

There was a 13th book released just recently I believe, which was "How to Read" a.k.a. Volume 13: Truth. Apparently there's a lot of character info in that book. That's where L's real name is revealed. Go to the second last page in the manga discussion thread, there's talk of it there.

The eyes gift also expand the Shinimgamis Lifespam

:heh:.. That's really smart.. :) :D

So I guess it's more of a manga spoiler.. (at most)
And it's always going to remain a mystery in the anime..

The answer is yes. (Take that, 10 character reply requirement!)

Who knows, Maybe the Anime team decides to reveal his name in the actual storyline