As more and more advertising moves to social media, it's important to understand the different platform rules before embarking on a new campaign. Who owns what's posted. How to interact with your followers. How to disclose endorsements or sponsorships. And who's responsible for user-posted content. The platforms often impose requirements that are different or stricter than those imposed by law.

Don't miss this rundown of what you need to know including:

• Which rules are common across platforms - and which are different
• Ownership of content you post
• Use of content
• Asking users to share, like or post
• Paid advertising on your brand's social media sites
• Advertising across multiple platforms
• Interacting with customers on social media sites
• Making online disclosures