Well, i think that someone (Grim...) had set up a random member generator, but I don't think anyone has been picked to choose the next theme yet. Really, a theme should be chosen or ready as soon as the previous fortnight's has closed - it'll keep momentum up.
The trouble with the random generator is that some people might only check the boards once every few days or weeks, and might mostly be lurkers who don't care.
Can we nominate someone to choose a theme for this fortnight's challenge and set a closing date of 4th May (two weeks tomorrow)?
Once that's been done I will post the log in details and people can get going.