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Win on Twitter ~ Twitaculous

Or you can just copy the tweet number (might look like 377190929154965505) or the URL of the tweet (might look like https://twitter.com/Twitaculous/status/377190929154965505) in the box and click Next Step

You can also use the regular contact form.

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.