Field Trip has just received a fairly large update that now brings the ability to swipe cards away and a more enhanced mapping experience and as reported on their Google+ page the app works great for SGS2 users too.
“Field Trip is your guide to the cool, hidden, and unique things in the world around you. Field Trip runs in the background on your phone. When you get close to something interesting, it pops up a card with details about the location. No click is required. If you have a headset or bluetooth connected, it can even read the info to you.“