I have myself on invisible as well because I found it intrusive when someone was looking at what I was looking at. It just made me really uncomfortable. That constant desire to have people paying attention to you is also something I don't "get" but that was not your question. Do I think it's intrusive? When it was happening to me and I knew it, yes, I found it intrusive. There is a "solution" though in the invisibility thing for those of us who do find it an issue.

As others have said though, I think the work for you is understanding the need that you have to know what others are doing and whether they are paying attention to you.