It is probably best to close this thread at the earliest opportunity to prevent any sectarian debate arising as we have just seen.
Regarding the information that you found, I don't know if it is completely true, and I also don't know why the saudi government is seen as representing the teachings of Muhammad Ibn Abdul-Wahhab, when all of us probably agree that no government today is 100% Islamic and that the person we are speaking of was a very noble scholar of Islam.
Anyway, brother Kadafi provided a link some time ago for a detailed look at the life of Ibn Abdul-Wahhaab, which is an eBook by Jamal ad-Din Zarabozo available here:
Read some of his works, from siding with the kuffar (he disallowed this) - to his praise of Sufism (and his son also, i beleive he was only against the extreme rafidite sufism of Shia Iran,this is bolsstered by the fact that he spent years in Isfahan/Iran - so it must be true), and also the works of the 4 madhabs. Mohammad ibn Abdul Wahab(ra) followed Hanbali fiqh AND REQUIRED HIS SUBJECTS TO DO SO.
I tried to verify if the above was mentioned in the biography, but so far I have only found the following information:
Before discussing Huraimilaa, it is important to note that the most trustworthy and relied upon works concerning Muhammad ibn Abdul-Wahhaab state that he only traveled to Hijaz, Basra, al-Zubair and al-Ahsaa (all shown in Figure 1).There are a number of other less reliable worksthat state that ibn Abdul-Wahhaab ventured to a number of other areas. For example, the European traveler Niebuhr stated that ibn Abdul-Wahhaab traveled to Baghdad and Persia. Al-Shashtari said that he also went to Isfahan.
The unidentified author of Lam’ al-Shihaab fi Seerah Muhammad ibn Abdul-Wahhaab (“The Brilliance of the Meteor in the Life of Muhammad ibn Abdul-Wahhaab”) states that ibn Abdul-Wahhaab also traveled to Baghdad (wherein he married a rich woman who later died and left him a good fortune), Kurdistan, Hamadhan, Isfahan, Rayy, Qum, Aleppo, Damascus, Jerusalem and Egypt, returning via the Suez through Yanbu, Madinah and Makkah. It also states that he studied Aristotelian philosophy and Sufism in Isfahan and that he was also proficient in Turkish and possibly Farsi. He later went to Qom where he became a follower of the Hanbali school. Furthermore, it states that he did not begin his travels until he was thirty-seven years old. That work also claims that Muhammad ibn Abdul-Wahhaab changed his name many times during those travels (being Abdullah in Basra, Ahmad in Baghdad and so forth).1
1 Cf., Al-Uthaimeen, Al-Shaikh Muhammad, p. 37. A refutation in English of these claims may be found in Vassiliev, pp. 65-66.
This is on Pg. 26-27 of that link, and the author explains the problem with the work from the unidentified author in the footnotes.