Tons of overbooking at CMH yesterday. I was trying to standby for an earlier CMH-DFW flight and they ended up needing a couple volunteers. Not sure what the comp was. Later, my flight was overbooked by 6. They offered $550 and flights the next day and got enough volunteers. Apparently the situation for CMH-PHX was dire, as I heard them offering $1,000 for any volunteers.