Facebook recently announced that they would clean up the content that appears on the news feed so that they deliver the right content to the right people at the right time.
So they recognised 3 categories of spam messages:
1. Like-baiting: When a post ‘begs’ readers to comment, like or share leading to abnormal distribution.
2. Frequently Circulated Content: Its not focusing on the genuinely re-shared content, but the ones that are repeatedly re-uploaded.
3. Spammy Links: Posts that trick people e.g. by claiming that there is an awesome photo album, into clicking through to a website that contains only ads or a combination of frequently circulated content and ads.
So if you are not posting spam then it won’t affect your page.