I ask this question because I was hanging out with a couple of friends on Skype the other day, and foot tickling torture was randomly brought up in conversation for a brief moment.
Another example, I was on a webcam streaming service the other day called live.me, and I've seen tickling brought up a few times in conversation with the female broadcaster we were talking to. I don't know who it was, but he was asking her if she was ticklish, where at, etc ... so I randomly told her "u know there's an entire tickle porn industry out there" and she acknowledged her awareness of it.
Another example, I was on a webcam streaming service the other day called live.me, and I've seen tickling brought up a few times in conversation with the female broadcaster we were talking to. I don't know who it was, but he was asking her if she was ticklish, where at, etc ... so I randomly told her "u know there's an entire tickle porn industry out there" and she acknowledged her awareness of it.