The first version of the word is clearly legible and readable and to me, words in all capital letters are by far the easiest to read. For the second version, I still kept it readable but somewhat illegible. I can still read the word without too much of a problem but I reversed the B and K as well as flipping the R upside down to trick the eye just a bit. For the third version of my word, it's obviously very much unreadable and without a doubt, illegible. I basically placed the whole word upside down, or reflected the second version of the word. Although it's totally illegible, I kept the W and R in the correct form just to make it SOMEWHAT readable...just for fun! This technique can be a valid tool in design in certain cases. If in a case let's say an album cover, and the band was going for an intricate design feel, where there is basically no rules or standards, I can see this working. So in cases such as the one I've stated, sometimes readability isn't too important but I wouldn't recommend having your business logo/title or for example, magazines and/or novels designed in this way. It may not be a good idea to have a reversed, upside down title. Do you agree??