StarQuestor Foxclaw

I would like to know if it is possible to locate someone on the grid who isn't in the same sim you are WITHOUT asking them. In other words, is it possible to find someone who is online and in your friends list or not without asking them or letting on you are trying to get to them? Thank you all for your replies. OF COURSE I want to know the answer to this for less then honorable intentions...LOL. Because if someone out there actually can do this, and its not obvious how then it is something I wanted to know how to do. I had a private invistigation business in SL a couple years ago but got out of that after some months. But I still get queries about how to track people. Of course I have all the best HUDs and know how to TP to anyone in the same sim. If this were something simple I wouldn't have asked the question. It seems those who created SL have created a fool proof way for people to keep their privacy. I had known about the permissions you can set in friends list. I've been on SL for years so I'm no amateur but I never heard this question addressed and when someone today asked me if it could be done I thought I'd put it out here on the forum. I had scoured the forum before posting and this question is not addressed anywhere. There are a lot of jealous "partners" and significant others in SL who want to be able to to just pop in on their cheating mates...I suppose from the cheaters point of view, they can feel secure that, while they can be detected as being "online" in SL, no one they know will suddenly pop in on them unexpectedly. ....Still, you would think that if someone is logged in SL, you should be able to not only know they are logged in which I can do with a HUD regardless if they select the "appear offline" with my name in thier list, but also be able to pinpoint whatever sim they are in and just go to the sim...i.e. when you pull up the main map, you would see the YELLOW dots of where your friends are...Oh well...the cheaters are still safe till some genius figures out how to crack this problem. Thanks again for all your help.