Yes that's it! Is it lluminati because of the triangle? And how does the tattoo confirm it?
"illuminati confirmed" is just a joke/meme you just say it at anything that remotely looks like it has to do with the illuminati (triangle, green triangle, pyramid)
it's a 100% free messaging service that has a ton of security on your messages and whatnot. it's cloud-based too so that means you can access your conversation from anywhere