The principle is simple: if there is a paid or otherwise material relationship between a creator and what they are promoting, the audience has a right to know. That covers sponsored posts, free products in exchange for coverage, affiliate commissions, and brand-ambassador deals. Vague tags buried in a wall of hashtags do not count. Disclosure must be clear and hard to miss.
Best practice is a plain label placed up front: "#ad," "paid partnership with [brand]," or the platform's built-in paid-partnership tool, plus a spoken disclosure in video. Clear disclosure also protects audience trust, and hidden sponsorships tend to backfire when viewers find out.
On Socialync's UGC job board, which opens November 1, disclosure is switched on for every campaign post. TikTok posts carry the Paid partnership label, and Instagram posts carry the paid partnership label naming the brand when the brand's account is connected.