Never show face pics.
The reason is, we know of 2 couples who did, and who were blackmailed by people who joined this SH group just for that reason. They trolled all profiles and befriended those with face pics.
They then found out as much as they could about the couples, including cell numbers. Using the cell numbers via True Caller type apps they identified the couples, did their homework , found them on Facebook and that took them to their jobs, families and friends... that's when the demands started. One couple, where the wife is a CEO of an estate agency Co (national brand), paid R300k to stop the threat of being exposed. It didnt end there, so they got a Private Detective involved, and hence we found out HOW the bastards did it. NEVER, EVER, SHOW YOUR FACES, or send face pics until you have vetted the other party and met them in the flesh at a public place.