Some excellent examples of the use of negative space in logo design on Logo Design Love, an amazing logo-focused blog I just spotted on FFFFOUND! Negative space, to me, is the ultimate way to achieve a recognizable brand identity in your logos without resorting to gimmicky computer tricks, gradients, shadows, or anything more than what is necessary.  It’s something I would opt to pursue in any branding project I happen to get involved with.  Although I can’t confirm it for certain, I believe the simpler the logo, the more iconographic, the easier it will be encoded and retrieved from memory.  Which logo is your favorite?