They are viewing the cam via a website I built around the cam's applet, but I suspect that rather than closing the browser when done they minimize it and open a new one at the next visit. So, ultimately, they're hugging the cam with several live feed requests which slows down or prevents other users' access. I seem to remember reading the cam can only support so many ( seven ?) simultaneous live feeds.
I'm looking into ways to perhaps put a counter into my website code to redirect users to some other website (empty page, or a "Thank U 4 Visiting") after a set number of minutes. Unfortunately, I'm not overly proficient in html/javascript.