Like the popular wise saying, experience is the best teacher. Most of us learn to be very careful after our first terrible experience. To me, being on social media means you are not longer a kid and you don't need to be told about scammers. Although creating awareness can reduce scam as you proclaim but self caution is the best. And besides not all strangers mean harm. I'm sure in one way or another, we all have met new people online and transacting without fear.