Alright im not going to claim knowing intimate details on this particular sigil. mainly because if you analyze actual demonic words and symbols too much it fucks with your head. I know enough from a friend that If you so much as looked at actual copies of Demonic rituals and text, you'd need an exorcist to get that shit out of you.
But it looks demonic to me and gives that vibe. I've seen what it looks like quickly and it doesn't look immediately unpleasant to the eye... It's very deceptively pretty sometimes. There's a picture I've seen online of some poor bloke getting a tattoo from his girlfriend of a demons brand and asking people what it means and it reminds me of this.
Your body is 100 percent a temple and sin is caustic. Most importantly Words have power. You say something and you mean it? You open a door for something (demon) to fuck with you in some way. The longer it goes on the more it fucks you up physically, mentally and spiritually. It will start from something small and harmless and spiral into an absolute obsession. This site and it's catalog of lolcows has plenty of examples to prove it.
Jesus holds the deed to your soul no matter what you swear or supposedly sell it to, so there's nothing you can't repent from if your sincere in your regret, but the longer it goes on the harder it is to come back from. You can heal yourself with God but the sin leaves stains on your soul.
God for what ever reason gave one of the most powerful and wise human beings on the planet (Solomon) the power to bind demons... And he couldn't handle it. He fell to degeneracy and sin. There's a lesson in nobody being too high to fall. And sadly Nick is an example.
Im summary I think looking at shit on the Internet is not as strong as say holding it in your hands, but it still has an effect and I wouldn't recommend touching or looking at it in extended moments anyway. It effects people differently depending on their levels of faith but it degrades everyone all the same.
If anybody's actually interested in first hand accounts I'd recommend looking up ex satanic priest John Ramirez's testimony. It's powerful stuff