One of of my favourite things about Twitter (and really, the internet in general) is the wealth of experience you can glean from people you've never met, all around the globe. It changed the way I travel. While I still love guidebooks for the sheer information of them, when it comes to eating, there's no better information than what you can learn from a local, or one better travelled than you. When it comes to restaurants, guidebook information is often out of date or you're not exactly sure of what the motives are behind a recommendation. When you ask the interwebz and collate the information - I prefer the spreadsheet mode - popular places pop up multiple times. Places off the beaten track become accessible, and that shopfront you were sure looked a bit dodgy is revealed as a bit of a gem. If you're really lucky, a generous local will offer to take you on an tapas binge, as happened with us in Seville.