# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2009-12-21 09:20:27 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/6888779348) In reply to: [@pk2004](http://twitter.com/pk2004/status/6888619012) @pk2004 I check into train stations either end of the commute, and one that I change at. There should be more defined 4sq etiquette.