I signed up on Plenty More Fish. I received messages from people but because it is a paid dating site, it didn't last long and they just disappeared.
What's more, the messages I received were from very, very desirable women. It seemed too good to be true and I am sure all of these were made up by the site to extract money from innocent naive people like me.
Therefore, I urge all readers of this to not pay for this dating site. It will enrage you like it has enraged me.