SuckaFree

It's just another version of the "ok"/666 symbol.

A404

If you look at "Method 2 - Eastern Tradition", you can see the cross they are doing. Although the people in the picture are not consistent in how they are doing it, I believe this is their intention (replace [dot] with a .)

wikihow[dot]com/Cross-Yourself

pushthis

they cant even do it uniformly. the woman and two men have 3 different variations.

salvia_d

Looks like it's suppose to be the sign of the cross.

LurkyCharms

It's Che doing a hand stand. Respect to the tripod.

70times7

Good question