I’m excited about this idea and hope to set some time aside soon (Friday? Do you hear me?) to take a crack at it. Some beautiful photos from this process – and I like the unpredictability of it – of being surprised, to some degree, of what your final product will be after pressing the shutter.
A guide to freelensing is available here and a growing Flickr group haunts these halls.
Perhaps my fav. so far is this shot from Gizmodo’s 101 list: