I'm glad the most popular mnemonics don't get displayed by default any more. In several cases the most popular mnemnonics actually have the components in them, or in some cases even show the characters that we're supposed to be remembering. That's tantamount to being given the answer in my book.
One of the purposes of the mnemonics for me is to reinforce the memories associating the components with their meanings; in the case of 皂, for example, if you use ndsino's fine mnemonic "Snow White and the seven dwarves use black soap" and have to recall that in this context "white" is 白 and "seven" is 七 you are reinforcing those associations. If you are given "Snow White (白)and the seven (七) dwarves use black soap" you are not practicing the white->白 and seven->七 associations.
James