Was one of the ones stranded at Dortmund airport on Monday. Turned into a bit of a shambles.
Had a 7 hour wait in airport while they first mucked about with organising people onto other flights, telling people to join another queue if they had a connecting flight then refusing to book half the people on to their connection.
Took ages to organise hotels, then when some of us got dropped off at one we were told Easyjet had only told them we were coming and hadn't actually booked us anything, so we all had to pay for rooms including taxis to the airport the following day.