"I prefer to remain anonymous on some posts for various reasons, and will continue to do so until this forum posts return e-mail addresses"

to me, this reads as "I will remain anonymous until I can no longer do so"

or an alternate translation "I prefer to remain anonymous so that I cannot be held responsible or answerable for my opinons"

I may be wrong, and I would hope I am wrong; but that is the way the above statement comes across to me.