“everyday” not “every day” (”every” modifies “day”)
“take a peak” instead of “take a peek” (seriously, I saw this in today’s SF Chronicle)
“head over heals” instead of “head over heels” (heel, that back part of your foot)
“secure the boarder” instead of “secure the border”
I could go on and on.
Makes me grit my teeth.
Also, “could care less” (as seen in the post you are responding to), which makes no logical sense, instead of “couldn’t care less”.
I mean, if you have to think and talk in cliches, learn to spell them correctly! Sheesh!