[Elsie]

We share this trait with most Christians, for whom baptism is a necessary ritual.

Oh?

Do you have a list of those demoninations that believe it's 'necessary'?

Just what does 'necessary' mean to an LDS member?

[tantiboh]

~”Do you have a list of those demoninations that believe it’s ‘necessary’?”~

Sure: http://en.wikipedia.org/wiki/Baptism#Comparative_summary

~”Just what does ‘necessary’ mean to an LDS member?”~

It means that it is a commandment given to us by God, and is therefore a requirement in order to return to live with Him.