Oh you noticed that person too. LOL
I can only assume that they think they will get more interaction from others due to it. It happens a lot on sites like this where you earn from the interaction but you see it on other sites to due to they are usually trying to get you to go to anther website where they are going to try and sell you something.
Males, mostly young ones fall for this type thing all the time so others will continue to try and use this tactic to their advantage as long as they can get a few suckers to fall for it. I have to say I usually can see this kind of thing from a mile away. Kind of like one of the newest members here, that posted about 10 post in a row. The name and the photo in my opinion is a dead give away.