I only need to know which of the little red lines I can ignore because they're trying to make me spell Merkin ;-)
Or because it's a weird word. I get a little red line for "irreparability," even though Google says that's the correct spelling.
I was a better speller before the Internet, when my main source of printed words was books. After you see a misspelling enough times, it starts to look right. Words most people think of as homophones, but which I pronounce distinctly (you're / your, for instance, which I say as ewer / yore) particularly get jumbled up, because I have to see the wrong spelling and "hear" the right pronunciation at the same time.
