Found by @twitaculous

This is a competition from Jules Swain Login To Enter »

So, as those of us with huge TBRs discover, I’ve already got a copy of this so I’m giving this signed hardback away! Follow & RT by midnight 18 August to enter. Open international.

Sometimes promoters tweet more than once.
Tweets will only get updated when you re-fetch them. This helps you because competitions will no longer "jump" between pages when competitions get added or competitions finish while you are browsing them. Competitions get "fetched" when you login or manually re-fetch them with "Forget Ended Competitions & Fetch New Ones". Additionally hidden tweets will stay visible until you "fetch" to save reloading the page and save you from losing your position.