Barter Collaboration Note

You assist a blogger with business matters and must put a zero-cash barter deal in writing. Based on the info below, write the note.
Requirements:
1. five blocks: what each side provides, content format and publish time, ad labeling, sample ownership, and breach handling;
2. never promise views, a positive review or rankings; leave product value as a placeholder and do not invent market prices;
3. state clearly that a bad experience means no post, with no one-sided clauses, and avoid superlatives;
4. if it is unclear whether barter content must be filed on the platform, mark it as a placeholder to confirm with me.
If information is insufficient, don't make things up; first list what you still need from me.
Output format: the five-block note, plus a 100-word message ready to send the merchant for confirmation.
Deal info: [platform, merchant product, each side's resources, desired publish time]