How to remove Uesr creation from recent changes page

We are starting to get spam creators on our wiki and want to remove them being shown on the recent changes page. Can anybody help with this as it is really getting annoying.

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195.95.133.244‎12:08, 27 January 2012

Wrong question :D You should avoid spam in the first place. See Spam

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Subfader‎13:47, 27 January 2012

If you rollback a spam edit with the bot=1 parameter, it will be hidden from the RC (Assuming you're an admin) - see https://www.mediawiki.org/wiki/Rollback#Rollback

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Bawolff‎21:14, 27 January 2012