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From experiences by other users they have not the best reputation until now

have you evaluated it?
This process (listing) could be managed by one of your core developer.
Other ways, you must create an announcement here on bitcointalk
https://bitcointalk.org/index.php?board=52.0 trying to find some one that could manage it for you.
I am curious, you need to pay for listing the coin or it will be offered by Vindax?