What to say in one-minute presentation of a poster in a scientific conference? The chair person of my poster session has told each participant to make an one-slide presentation with one minute maximum speaking time (known as poster blitz or poster madness).

I am wondering what to keep on the slide and what to say in one minute? Is it Okay, if I speak my abstract only along with a figure? Could you please suggest me if there is any other good way of presentation?
I've seen this before and it can work very well. 
Your only task in the one minute slot is to convince people that they should come and see your poster. Say what you've been doing and why it's interesting. You could use your abstract as a starting point but don't just read it out. Keep the slide really simple with the paper title and authors and a single, striking figure.