If other forum members have given you positive Karma for helping on the forum, you will receive free Voucher for registering to MUM, simply email training@mikrotik.com
As you know, MUM registration is free of charge, but that doesn't include Lunch and RouterOS license. Voucher will include Lunch and RouterOS license, but you will receive them only if you personally attend the MUM.
So, if you wish to come to the MUM, and have Karma more than "1", email us to receive your entry Voucher!