There should be a repository for taps of submitted, when I tap other users maybe include a flame icon on the thumbnail of the users you tapped in the home window. It would also be nice to have either a countdown for when you can tap again or a timestamp for when you sent your tap. I also think premium users should be given multiple if not unlimited taps. I also think if you tap someone that you've already exchanged messages with it should highlight your conversation in the messages inbox.