Homid,
"Brothers, it is good to see Jawaan with some sense and sensability. Off course you cannot judge things by having a good intension. That way I have a good intention, so I can drink alcohol. NO NO NO."
What the hell are you talking about? When I said you have the right intention, it meant that as long as your intention to do khatams is so that the dead person can get reward, then it's alright.
That's also why I specified that if you can do good things so that someone can get reward, then it isn't necessarily wrong. If reading Quran is one of the things you can do so that the dead person can gain reward, and you do it with this intention, then there is nothing wrong with it.
The Quran in the format we have it today, you may call it bida'a, because in the time of the Prophet (S.A.W.), they didn't have it like that. It was after a lot of Sahaba (R.A.) started dying in battle, that they compiled it into a book with thirty chapters.
The way we have the Tasbeeh(string with 100 beads used to keep count of your zikr) is also something you can say is bida'a, since they did not have them at the time of Rasul(S.A.W.).
Also, this may only apply to you if you are a Sunni Hanafi Muslim-- the Ulema have suggested us to do some Amal, like go out in the path of Allah, forty days every year, three days a month, four months in your lifetime. Now if we were to consider that these numbers were said in Islam, meaning that going out in the path of Allah for such times is your religious obligation, that would be bida'a. But if you decided to set those numbers as personal goals for yourself, then there is nothing wrong with it.
So I stand by my word. It depends on intention. Your intention can make the difference between your deeds being bida'a or acceptable.
So Br.Jawaan, I think your real question is can the Quran be read to gain good deeds for a dead brother/sister. This question, I don't know the answer to. If you find it, then you can answe your own question. If you want me to find it for you, then you'll have to give me about a month.
If you look in Hadith, I you wouldn't find the Prophet (S.A.W.) saying that we should compile the Quran into one book with thirty chapters, as the Quran we read today has been. But it was done with the right intention. The intention of propagating Islam.