@Ryanair i've just checked in but what does this mean? Seat 00?pic.twitter.com/C8zdngcZZE
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Hi Mick, flight is overbook and seat would be assigned to you at the airport. Thanks MV
Why overbook a flight tho? 
on some route flight could be oversold. Thanks MV
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.