Here you have some different options
You can contact us at firstname.lastname@example.org and tell us what you want in excluding. Then we must have something in the link that can distinguish them from other content or you can add a meta tag that we can use.
If you add data-spklw-private="1" to the widget tag of your post, we will not scrape it. So if you are unsure if you want it recommended, publish the article with the mentioned code, and then when you are sure that you want recommend it.
This is an example of how you implement it:
<div data-spklw-widget="widget-aabbccdd112233" data-spklw-private="1"></div>
<script src="http://widgets.sprinklecontent.com/v2/sprinkle.js" async></script>