 Sometimes you're wanting to add a comment and mentioning somebody who made it and Facebook won't give you the right person. So Tina Miller here, for example, I'm trying to do at Tina Miller and Facebook won't give me the right one. So what do I do? I move my mouse over her name and then I noticed, well, I can open up her profile in a separate tab and basically I get her username on Facebook, right? Tina Miller 222 and that's what I do in here. So I go at Tina Miller 222. Instantly Facebook gives me the correct person that I can mention and tag so that she could be notified. So I hope this is helpful.