Meeting people online

Hey ladies! I need to write an informative speech on the dangers of meeting people online. I was wondering if you guys had any stories that you would not mind me possibly sharing in my speech (it's just in front of about 20 people). I will not be using names in my speech. The point of my speech is not to tell people not to meet people offline but to just tell them some basic principles while meeting them just to keep them safe. Thank you!