You say "Undo edits of users who lost money on ICBIT and now blackmailing me by spamming this wikipage asking to give them money back",
If you disagree with the things I have written in my posts, why don't you address them? Your exchange is poorly run and no seasoned trader will stay on your site when they see what is going on there. I'm offering to give you advice on how to run an exchange without the dishonesty you are using now. In return I want some of the bitcoin that were taken through dishonest practices returned.
I have provided extensive descriptions of my experience on icbit. https://bitcointalk.org/index.php?topic=246845
As I've said before my guess is that you simply do not understand the importance of running a financial services site, especially a site marketing derivatives, in a way that is beyond ethical question. If you have questions about my complaint then ask them. You sent me an email and then you ignored my response. If you have any question please read through the complaint that I posted publicly and ask anything by email or on the post or here.
I think I am being quite reasonable in asking that 25% of what I lost on icbit be returned.
If you want to make an honest futures exchange and you settle the account with me for 25%, about 5btc, I will be happy to give you free suggestions to make an honest exchange.