Proofreader's nightmare

OK - to understand this blip you have to know that my job is editing and proofreading. I have driven past this advert for the last couple of weeks and it is driving me mad. If you are going to put your advert on a huge trailer and lug it around the area, please, please use a spell-checker and read it before you print it out in foot high print. I've photoshopped out the telephone number as I don't want this lazy company getting any business!

Got chance to blip it when I stopped off for dips and guacomole ingredients for a surprise mexican meal for one of my friend's birthdays.

(and the things that make me want to wield a giant red editor's pen are: one of (??!) and 'hastle')