Edited
That website you posted beat all around the bush but never answered the questions, it spoke of every news group and even included Adolph Hitler's Diaries for reasons that are beyond me, and does not even include any logical point for adding it in! Then it moved on to the Hindu Vedas, the Ramayana, The Bhagvad Gita, and of course attacked the New and Old Testaments by trying to add on Gnostic Gospels which was written 200 to 300 years after Jesus Christ! which almost all of Christianity does not use, except for the Gnostic Churches in Egypt and a couple other arab states.
The Ancient Dead Sea Scrolls and the Septuagent proves the Bible has remained unchanged. The Dead Sea Scrolls were completed over 200 years before Christ. The New Testament has remained unchanged 60 tears AD. REASEARCH IT! LOOK IT UP! It is open and proven history, unless a person is deaf and blind.
The website still never answered the questions even after wasting all the space attacking evrerything else as if it would sidetrack somebody from the real subject.
Here are the Textual Variants of the Qur'an:
Jam' Al-Qur'an Chapter 1 - The Initial Collection of the Qur'an Text
http://www.answering-islam.org/Gilchrist/Jam/chap1.html
Jam' Al-Qur'an Chapter 2 - The Uthmanic Recension of the Qur'an
http://www.answering-islam.org/Gilchrist/Jam/chap2.html
Jam' Al-Qur'an Chapter 3 - The Codices of ibn Mas`ud and Ubayy ibn Ka`b
http://www.answering-islam.org/Gilchrist/Jam/chap3.html
from the Hadiths part 2 - the first collection of the Qur'an
http://www.answering-islam.org/Quran/Collection/chap2.html
from the Hadiths part 3 - Differences before the 'Uthmanic collection
http://www.answering-islam.org/Quran/Collection/chap3.html
from the Hadiths part 4 - the 'Uthmanic collection
http://www.answering-islam.org/Quran/Collection/chap4.html
Relation of Shi'a Theology to the Qur'an
http://www.answering-islam.org/Quran/Shia/theology.html
A variant from Ubayy's Codex (as documented by Yusuf Ali)
http://www.answering-islam.org/Hahn/yusufali.htm
Distortion in the Qur'an
http://www.answering-islam.org/Quran/Text/distortion.html
A Contribution of Uthman to the Qur'an
http://www.answering-islam.org/Hahn/uthman.htm
Uthman's standardising of the Qur'an
http://www.answering-islam.org/Green/uthman.htm
'Uthman and the Recension of the Koran
http://www.answering-islam.org/Books/Caetani/uthman.htm
Evidence of Change After 'Uthman
There is evidence that changes to the Qur'an continued after the time of 'Uthman:
Jam' Al-Qur'an Chapter 5 - The Seven Different Readings
http://www.answering-islam.org/Gilchrist/Jam/chap5.html
Jam' Al-Qur'an Chapter 6 - The Compilation of the Qur'an in Perspective
http://www.answering-islam.org/Gilchrist/Jam/chap6.html
Al-Hajjaj changed Uthman's Qur'an text and a response(?): Part 1, Part 2
http://www.answering-islam.org/Quran/Text/hajjaj.html
Hadiths which say the Qur'an is incomplete
Both the Qur'an and the Sunna give evidence that some of the Qur'an was lost, forgotten, or abrogated:
Jam' Al-Qur'an Chapter 4 - The Missing Passages of the Qur'an
http://www.answering-islam.org/Gilchrist/Jam/chap4.html
Variant Readings of the Quran
http://www.answering-islam.org/Shamoun/quran_variants.htm
Islam and Stoning: A Case Study Into the Textual Corruption Of the Quran
http://www.answering-islam.org/Shamoun/stoning.htm
from the Hadiths part 6 - The status of the mushaf
http://www.answering-islam.org/Quran/Collection/chap6.html
Sura 2:238 is not complete according to Aisha
http://www.answering-islam.org/Quran/Text/2.238.html
Some Muslims are of the conviction spurious verses have been added:
The controversy about Sura 9:128-129 - Hence these verses are removed in this Qur'an
http://www.submission.org/tampering.html
http://www.submission.org/suras/sura9.htm
Hadiths which refer to lost suras
There are Hadiths which refer to suras which are not in the modern Qur'an. Surely this indicates that the Qur'an has changed since the time of these Hadiths.
Jam' Al-Qur'an Chapter 4 - The Missing Passages of the Qur'an
http://www.answering-islam.org/Gilchrist/Jam/chap4.html
from the Hadiths part 5.1 - Missing Verses
http://www.answering-islam.org/Quran/Text/integrity2.html
On the Integrity of the Qur'an (2) Describes Hadiths concerning the sura about 'The Valley of Riches'
http://www.answering-islam.org/Quran/Text/suckling.html
The Verse on Suckling
http://www.answering-islam.org/Quran/Text/suckling.html
The Verse on Stoning
http://www.answering-islam.org/Quran/Text/stoning.html
'Verse' in the "Comparative Index to Islam" describes several missing verses.
http://www.answering-islam.org/Index/V/verse.html
Variants which exist in present-day manuscripts
By simply comparing existing manuscripts, it can be shown that not all Qur'an manuscripts are the same. Therefore, the Qur'an has not been perfectly preserved.
About some recent manuscript findings (in the loft of the old Great Mosque of Sana'a, in Yemen)
http://www.derafsh-kaviyani.com/english/quran1.html
The Different Arabic Versions of the Qur'an
http://www.answering-islam.org/Green/seven.htm
Text Unchanged, Texts Unchanging? discusses the work of Arthur Jeffery (offsite).
http://www.rim.org/muslim/texts.htm
Relation of Shi'a Theology to the Qur'an
http://www.answering-islam.org/Quran/Shia/theology.html
A Variant Text of the Fatiha
http://www.answering-islam.org/Books/Jeffery/fatiha.htm
The Orthography of the Samarqand Codex
http://www.answering-islam.org/Books/Jeffery/Samarqand/index.htm
On the Integrity of the Qur'an (1) - Muslim writers admit there exist variants in the Qur'an.
http://www.answering-islam.org/Quran/Text/integrity1.html
Differences in the Hafs and Warsh texts
http://www.answering-islam.org/Quran/Text/warsh.html
Some textual variants in Sura 19
http://www.answering-islam.org/Quran/Text/var1.html
Jam' Al-Qur'an Chapter 7 - The Early Surviving Qur'an Manuscripts
http://www.answering-islam.org/Gilchrist/Jam/chap7.html
from the Hadiths part 5.2 - Variant Verses
http://www.answering-islam.org/Quran/Collection/chap5.html#5.2
Are the "Shia" suras al-Nurain and al-Wilaya genuine?
http://www.answering-islam.org/Quran/Text/genuine.html
Variant Readings in the Qur'an and the Bible
http://www.answering-islam.org/Campbell/s3c3c.html
Leaves from two ancient MSS. of the Coran
http://www.answering-islam.org/Books/AS_Lewis/index.htm
What is there to hide?
If the Qur'an truly is uncorrupted, why does the Muslim world not publish the oldest Qur'an manuscripts? What is there to hide?
Textual criticism of Bible and Qur'an
http://www.answering-islam.org/Quran/Text/criticaltext.html
Objections
How could John Burton say the Qur'an was perfectly preserved?
http://www.answering-islam.org/Quran/Text/burton.html
Other
The Claim of Muhammad's Perfect Memory
http://www.answering-islam.org/Green/forgot.htm
Scribal and Grammatical Errors in the Qur'an
http://debate.domini.org/newton/
Different verse numbering systems in the Qur'an
http://www.answering-islam.org/Quran/Text/numbers.html
Articles or books which cover the whole topic
A Perfect Qur'an? (impressive, comprehensive)
http://www.answering-islam.org/PQ/index.htm
Is the Qur'an the Word of God?
http://debate.org.uk/topics/history/debate/debate.htm
Jam' Ahttp://debate.org.uk/topics/history/debate/debate.html-Qur'an, an excellent book which covers most of the material presented here.
http://www.answering-islam.org/Gilchrist/Jam/index.html
The Qur'an in Islam (short booklet)
http://www.answering-islam.org/Books/Goldsack/Readings/index.htm
The Textual History of the Qur'an, an article by Arthur Jeffery
http://www.answering-islam.org/Books/Jeffery/thq.htm
Materials for the History of the Text of the Qur'an (standard reference work by Arthur Jeffery)
http://www.answering-islam.org/Books/Jeffery/Materials/index.htm
Textual Variations of the Koran by D. S. Margoliouth
http://www.answering-islam.org/Books/Margoliouth/variants.htm
The Collection of the Qur'an - from the Hadiths; direct quotes from the Hadiths, on the collection and alteration of the Qur'an.
http://www.answering-islam.org/Quran/Collection/index.html
Implications for our dialogue
The Compilation of the Text of the Qur'an and the Sunni-Shia Dispute seeks to "show how the different Muslim hypotheses about the compilation of the Qur'an, and the Sunni-Shia dispute therein, help to explain the attitudes of Muslims to the Christian concept of inspiration, text and canon."
http://debate.org.uk/topics/theo/dispute.htm
Preservation does not imply truth
http://www.answering-islam.org/Fallacies/preserved.html
Some newsgroup postings by a Muslim on the Topkapi and Tashkent manuscripts, confirming the existence of textual variants
http://www.deja.com/getdoc.xp?AN=479896990
http://www.deja.com/getdoc.xp?AN=484994204
http://www.deja.com/getdoc.xp?AN=280272971
and spelling differences in Qur'an editions in India
http://www.deja.com/getdoc.xp?AN=407412868
http://www.deja.com/getdoc.xp?AN=430857713