When you examine social networks' TOS, you'll see that many have different opinions as to acceptable versus prohibited behavior.
But are you secured from being banned? No. Here’s why.
1. TOS can be changed (with or without notice). For instance, Google+ has started adding more rules and even more pages to its official TOS, while in the process of banning.
2. TOS can be interpreted various ways. Facebook’s vague rule against content that “contains nudity or graphic or gratuitous violence” has several times been speculated upon, for instance, when Facebook removed material that featured two men kissing and images of breastfeeding mothers. (In neither case were the accounts banned. Only the content was removed.)