Social Media Insights.Get up to speed on social media advertising with these videos. Facebook If you don't remember anything else remember this:Targeting is supremely importantYou want simple, eye catching adsTrack the results!!! Twitter If you don't remember anything else remember this: Vast majority of users are on mobile devices.Great interest targeting. Don't buy followers. LinkedIn Pros:White collar audience.Robust targeting options.Cons:High cost per click.Limited volume.