Twitter also had this policy when I worked there (two years ago) and I thought it was really poorly thought out. Apart from all of the (relatively obvious) issu

Twitter also had this policy when I worked there (two years ago) and I thought it was really poorly thought out. Apart from all of the (relatively obvious) issues mentioned in the post, any vacation at Twitter was at the discretion of your immediate manager. So if you happened to have a hard-arse manager, or one who hated you, tough luck. Really a bad idea.