Do not post Sites , Porn, Blogs, Pages on this platform trying to promote.
They build links using some of the disreputable techniques above, and they use the terms they want to rank for as the anchor text, hoping it’ll increase their chances of getting ranked.
Every year or two, they also roll out major updates that cause huge shifts in search engine rankings for nearly everyone on the web.
If you’re not familiar with the term “anchor text,” it refers to the text inside of a link.
Learn more You might have received the warning from Google due to any of the reasons like making hate speech, using abusive language, spamming, sharing links from the commercial websites, sharing same content in many communities, posting pornographic content or violating community guidelines and rules, impersonating someone, indulging in illegal activities etc.
Biggest reason might be you shared same post in several communities or repeatedly shared links from a particular website (commercial one) which resulted in alerting Google content filters to mark you as spam. Do not worry, just on your Google Plus account for next 24 hours.