Hello, my name is ***** ***** I will answer your question. I believe that the reason the websites are in the website data is because they were advertisements on another site visited. The reason that I believe this is because I opened safari and went to match.com. I didn't navigate the site at all I simply went to the main page. I checked the web data area and in fact match.com was there but the size was much larger then what you state above. I have 12.8 KB.
I wanted to verify that it was an advertisement so I visited yahoo.com which is littered with ads. I then checked the Website data again and I had tons of small sized websites. So I think it is safe to say that if the website is showing up with such a small size then it is in fact an advertisement from another visited site. With that being said, I do not know about your porn site question. But with this information it is certainly a possibility.
I hope this has answered your question and any further assistance needed feel free to reach out.
Hello Pam, I just wanted to reach to see if you are satisfied with your response. If you are then it would be great if you can rate my service if not then let me know and I can help you further. Thanks. Jason