How are you going to handle afk macroing and running/ swimming to gain skills?

All games which have a skill approach such as this one have run into the problem of players macroing to artificially raise skills.

Is there already someting in place to counter this? Or will there be GM's keeping it under control?

Keep in mind that games which do not address this problem early enough or correctly usually end up with huge disparities between players, and then correct it too late and do nothing except make people angry