@Edwin you need to make your pick :) Click on the Manage your picks button and select a team that you think will win its match (its just for fun, so pick any team).
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The red number (called 'counter') on the Articles Navigation Tab = the count of Unread Articles. There is no indicator of unread article comments.
If you are referring to the Forums TAB itself, Core XenForo does not use the ['counter'] element for any of the core Navigation Tabs. The Forums...
Actually, it sticks out pretty well to me with this style. Once you READ something, its no longer "new" tho (just like threads) and the title will no longer be bold.