Found by @twitaculous

This is a competition from MOB Kitchen Login To Enter »

#Competition MOB! The summer is upon us so it's time to celebrate. In order to enter just: 1. Guess the number of coins in the jar. You’re allowed 3 guesses. 2. Retweet this post! 3. Follow @mobkitchenuk & the first person to guess the right number will win the pot. #giveaway

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.