MMM, yep a bit of a problem, but for the cash, not too bad. I might try one as a third background light for my shoddy photo's!
From what i understand, lumen measurements can be misleading, in that if the reflector causes light to spill, the brightness can be poor, but still with a high lumen measurement.
Im probably misunderstanding this and im sure someone on here can throw some light on the subject!