Regarding Macro usage.
Any Macro that performs more than one function per keypress is prohibited. This means that a Macro that continuously attempts to join a full server (what I assume the alleged macro does) would get you banned.
Server: Devona’s Rest
Regardless, ANet recently changed the mechanics for determining the population of worlds. It is now setup so that it no longer varies over short periods of time, i.e. it won’t do you any good to spam your attempts: those servers that are full at this moment will be full in 5 minutes, as well kitten minutes, 5 hrs, or 5 days from now.
(INB4: of course ANet needs to do something so people can transfer more easily, including changing the incentives to those leaving full servers. I don’t expect that to happen any time soon, though.)
John Smith: “you should kill monsters, because killing monsters is awesome.”