any active exchange? where do you send coins from polo?
looks died or project with all left devs?
well if you took the time to read the topic a bit, the info you're looking for is 1-2 pages back.
the only exchange is Zapple (zapple.com). You can transfer your coins from polo to zapple else you can download the wallet and move them there for now.
the project is alive and well (wallet upgrade is comin)