Two mages and a fighter stand in a clearing.P1-Talk: "Ooo, colorful glowing lights floating around you. Can you cast that on me, too?"P2 to P1-Tell: "Hey, dude, you can't really see those things floating around my character. They're OOC."P3-Talk: "Sure thing. Then we can be glowy together. *giggles*"P1 to P2-Tell: "Who told you that? I can see them, you can see them, everyone can see them. They must be IC."P2 to P1-Tell: "Just because you see it on the screen doesn't mean it's actually there."P1 to P3-Talk: "/// hey, can I see the glowy lights floating around you from your spells?"P3-Talk: "Um, yeah."P2-Talk: "///No, he can't see them; the visuals are OOC."
To be honest, I don't think it's terribly important.
So, from what I'm getting, the "official" answer is:"We don't want to say that all visuals represented IG count, or that none count. Also, since we don't have the time to define whether each effect should be there or not, just go ahead an role play it however you want."
So, to me, as it affects character decisions, it does have quite a bit of impact.
Define "detect"?
See it being cast?
See its persistent visual effect (if any)?