Your profile is your chance to sell yourself to thousands of potential dates, which can be overwhelming. Your profile should be light hearted and put over something about who you are and the things you like to do. Keep your profile reasonably short and to the point, as in don't ramble on and on, you want to sell yourself not send them to sleep. If you get stuck ask your friends how they would describe you to a potential date or have a look around at other profiles and take some tips from the ones you like.