I love looking at the visual metadata in peoples online pictures ( SELFIES!!! ) . Wallpaper, carpets, furniture, pictures, mess. Especially on dating sites! It often tells a very different story. Sometimes I get in touch and ask them about things. "Who painted that picture" "What type of thing came in that cardboard box" .. It's much more interesting than "Hi, I'm John, I love football and my motorbike, Seeking a partner for walks in the countryside and fun" .
Guys over 40yr's seem especially bad at doing selfies on dating sites. They either look like convicts or it's a photo of them at their wedding, with their wife they are cheating on cut out :-)