When you first discussed the site on the LF Photography forum I got the impression the emphasis would be on homemade cameras. Will you be including data and information or reviews of cameras being produced new today?
Also, i think it would be a great service if you could compile a catalogue of sorts of common used ULF cameras listing specifications such as bellows extension, weight, style tilt (pivot or base) type and extent of available movements. This would be nice for people looking for used cameras and only have the word of the seller (who sometimes know about the camera) to go by.
And as already pointed out, a list of lenses and basic specs of lenses that cover ULF up to 20x24. Coverage wide open and stopped down, type of lens, size and weight.