Guild Wars 2's free transfers before ArenaNet started charging for them? You may have a limited window of opportunity to jump servers for the remainder of the month.
Guild Wars 2 is offering players the chance to transfer from their current world to a medium-population server until April 1st without a fee. ArenaNet lists six NA servers and seven EU/Middle East servers as potential landing pads for this program.
Since you can only transfer once a week and this chance lasts less than a week, you better make darn sure you want to be going to that particular world before clicking on that button.