On spelling

Just a quick note.  Why is Caesar so hard to spell?  As in Caesar Salad?  As opposed to Cesar, Cesaer, Cesear, Ceseaer???  I recently saw a single cafe which spelled this two ways in one menu, and it's misspelled everywhere....

Its vs it's.  Always bewilders me when I see an expensive ad in which clearly much moolah has been expended on photography, immortal prose and marketing, but omigosh, they haven't got it proofread properly.  They're trying to convince me to spend bunches of money on their quality product, and they can't get its/it's right.  I lose confidence. I do.  I start wondering if the quality of your product is all you say...

PS there are no spelling mistakes on this blog, of course.  Only typos.   !!!