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[The Fifth Horseman]

200 MB is small.

You didn't consider all consequences.
It's not those 215 MB that would be the problem. (I've just checked the exact size, yes.)
It's the 215 GB of transfer these 215 MB times one thousand people downloading it would generate and that's a very careful estimate (read: probably 10x lower than it should be).
Bandwidth doesn't come for free, you know. Someone has to foot the bill.

I don't see the ISO cellar.

Of course you don't.
After we had several dozen spammers hitting the forum in the run for ISO Cellar, it now requires a certain time to pass since your registration in order to access it. Apart from a small postcount requirement, that is.