I agree:

1. They post snarky messages on my FB to goad me.
2. It's tempting to argue in public w/them on my thread but then all my FB friends would see this happening.
3. It's not worth messaging the person to find out why they're acting like such mean jerks to me posting snarky messages.
4. Real friends won't post snarky messages on my FB posts to get a negative reaction from me. Real friends don't do that.
5. Responding to snarky FB posts takes me down to the person's level. It won't change the fact that for whatever reason, this person doesn't like me but isn't emotionally intelligent enough to tell me that they don't like me or why. That would just solve all the snarkiness wouldn't it? Tell me if I wrote something to them or said something to them that hurt their feelings, so that I could apologize. I am not the type of person who is snarky. I want to know if I hurt someone's feelings so I can apologize.
6. It's perfectly reasonable and healthy to delete and block someone on FB who consistently posts snarky messages bc their agenda is to embarrass me on my own FB wall for all my friends to see.
7. IF they harass me, I can contact the police and file a report.

I just wish that people could act like adults with me, and tell me "Hey, Motts, you hurt my feelings when you did/said a,b,c.." or "I'm upset with you because of a,b,c..." I don't get it. I must attract these people with poor boundaries or I ignore the red flags in the friendship, or I don't know what. I just assume that once you become an adult, you can express how you feel to someone else, esp. if you don't like them instead of acting out, by posting snarky messages on social media. It's just so dumb and so immature. And this person went to a top 10 ivy league school, if you can believe that! They have several masters degrees! And THIS is how they behave on social media. I mean, Christ! WTF!