I've been aware of the phenomenon for years. And no I have no desire to look at pictures of such things. I just don't get it. Why? And again all I ask and all I want to know is that's a very small exit-only hole, why/how do people put things up there?
I'm not into it but it seems pretty inevitable given its proximity to nerve endings and such. Who cares what people do to their own selves? I imagine most would be using lube and only sizing up after they feel confident with their current diameter.
I personally haven't tried sounding but I do have a 0g Prince Albert, so I always have a reasonably thick piece of metal in there at the tip and it's not a big deal.