I have two webcams (different views of the same room) and while neither are hidden, finding them randomly wouldn't be all that easy, I don't think.
The person replied - quite shocked to have heard from me - that one of my cams was on something called Openpedia. I'd never heard of Openpedia but I easily found me. It's a webcam site that appears, for the most part, to be non-porn webcams around the world. It looks like they are added by bot and include geographical info with a map. It's really kind of cool and a little addicting.
At the time, there were a couple of comments which were amusing. The funniest was the one where someone who had seen the cam without me in it for a while and then saw me and was shocked. She did not expect someone who looked like me to have a room like that.
Then, yesterday, I got a notice that someone new on Flickr had added me and left comments. The comments were really sweet and one indicated that she had done a fair amount of research on me and was respectfully appreciative and curious. It sounded a lot like Openpedia so I went back.
Now I have 84 comments and a bunch of conversation - someone found my Google profile so now they know more about me and the bears. And they don't like the living room rearrangement - and, honestly, I don't blame them but it's the best I can do with the air conditioner, I think.
Anyway, it's hilarious to 'listen' in on a conversation about me based on my living room. I'm kind of tempted to join in the conversation but I don't want to ruin the fun.