100 Most Often Mispronounced Words

How Not to Sound Illiterate

The 100 Most Often Mispronounced Words and Phrases in English

Does anyone ever actually say "a blessing in the skies" instead of "a blessing in disguise"? I wonder. I kinda like the phrase "a blessing in the skies," though. It makes me think of a warm, sunny day, like today.

If spelling is more your bugaboo, there's also this:

The 100 Most Often Misspelled Words in English