Possibly the worst place to have a typo is in a headline. Just look how bad this typo of a cappella looks on the home page of Yahoo! TV:
I was curious: Was that really just a typo? To find the answer, I took a quick peek at the article, which has the same headline and — surprise! — another misspelled a cappella!
Just imagine: It took the entire Yahoo! TV staff to come up with that spelling.