Found by @twitaculous

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COMPETITION TIME!!! RE-TWEET and WIN 4 tickets to the Biggest 80s-90s Disco Concert at The SSE Arena, Belfast on 27th of April! If you already bought tickets and WIN, we will offer full refund with the prize. Winner announced 10 April. Tickets available :

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.