If anyone is interested in debating on religion, a good place to do it is
Historum, which is the biggest English language forum about history.
There is a whole section of the forum dedicated to Religion, and as one would expect, most of the threads in that section are about Islam.
Most of the members of the forum are Atheists, but there are quite a few, very vocal, Muslims there too. They range from Quran only moderates to full on conspiracy theory, Jew hating nutters.
The mods on the forum are very neutral and do not censure debates as long as they are not provocative or insulting.
I know that a lot of people here have no interest in these kinds of debates, but in case you do, this is a good medium because debates with Muslims on actual Islamic forums are usually censured and they will often try to find any excuse for banning you. The history forum on the other hand is far more neutral.
By the way, do not think you need to be a history buff to participate as most members on there don't actually know much about history anyway.
There are two interesting sub forums relavent to Islam:
Religion Sub-ForumMiddle Eastern and African History Sub-Forum