How does one become a muslim ?

[Abraham]

Originally Posted by DAB

It actually means to give yourself to the mercy of god...

Submission to Allah and his word, the Quran, I would say.

And that's where the misery starts for a religion - any religion - that has strict conformal rules, its own legal system (Sharia) and an pretentions of world wide domination.
Any form of intellectual criticism, be it theological, moral, historical, political, economical or sociological can always be suppressed by an appeal on fundamental Islam...
Liberal Muslims have (always had) a though time... they are seen as infidels by fundamental Islam.