In case anyone is interested, in Chrome (Mac at least), it's under Settings > Show advanced settings > Content Settings (under Privacy) and then the checkbox "B

In case anyone is interested, in Chrome (Mac at least), it's under Settings > Show advanced settings > Content Settings (under Privacy) and then the checkbox "Block third-party cookies and site data". http://www.evernote.com/shard/s8/sh/eb3a23ef-8902-4ae1-87d8-0c906f78cb70/43761caebb5c8bbd9712bdcf45c543de http://www.evernote.com/shard/s8/sh/eb3a23ef-8902-4ae1-87d8-... So I guess this is one reason why people leave that enabled: not quite obvious.