There are a number of things that you want to keep in mind if you decide you want to get bumped. It’s best to travel with all your belongings as carry-on luggage if possible. If you get bumped from a a flight, your luggage is going to arrive at a different time than you do and the likelihood of problems locating it will increase. If you get bumped from several flights the chances for baggage problems will only increase". - Jeff Strain
"When you ask to be bumped, always insist that you are willing to be bumped only if you can be guaranteed a seat on the next flight out. This does two things for you. First, it means that you have another opportunity of being bumped and gain another voucher. Secondly, it means that you will be able to get to your destination city if need be. If you volunteer without getting a guaranteed seat on the next flight, you may find that they don’t have any free seats on any of the other flights that day and you won’t get compensated since you didn’t have a confirmed seat on the flight.