I never gave spelling or signs or phraseology much attention until I started working on stuff for video in a television station...
Spelling errors (while often funny) could get one into trouble - unless it was one of those hysterical crawls they put up when there is an obvious disaster and often the station itself is off the air in many homes such as "Complete Story at 6 O'Clock" when large areas are being evacuated because of an earthquake... ... but I digress.
I love 'what were they thinking' signs - like the Railroad STOP sign.... like someone's brain was having tea in far off place rather than putting his or her eight hours...
Goofy stuff reminds me how filled with silly putty we really are for all of our posturing and big woids...
If someone 'gets' what your are trying to say.... it's all good....no matter how it's 'spelt'.