We’ve blogged several times about the need to disclose when social media posts by endorsers, particularly celebrities, have been paid for. And there has been lots of guidance and discussion about how best to do that, particularly in shorter form media such as Twitter. For example, “The FTC’s Endorsement Guides: What People Are Asking” provides broad direction. While the FTC does not mandate specific disclosure language, it suggests directing influencers to use “#sponsored,” “#promoted,”…