Confusing tooltip, opt out opt in

I am having a hard time understanding what seems to be a very simple sentence, so anyone who speaks English better than me, help me understand the following:

"By checking this box you will opt all mature audience ads out of your ad rotation."

What does this mean? If I check the checkbox, mature ads will not appear or what?

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Solution 1:

The way the website has framed the sentence, it is apparent that it wants you to think that you're missing out on a lot of dating offers and the like, whether you want it or not.

In the other scenario, it is assumed that you're carrying out an 'ad rotation' with a software, and it becomes a question of selecting what kind of audience can view your [dating] ads. This essentially means that checking the box will exclude mature audiences from your viewership, and will limit the ads to [preferably] people who aren't yet mature.