Misspelled names are the big thing that turn me off on a fic. No offense to the authors who misspell them, and I'm sure some of them have wonderful stories with great plotlines, I just can't continue reading. It's too much work for my poor addled brain, I think, to keep correcting as I go along.

And OMG, cinnamon does that to me too! And "occasionally" (which I just had to look up to use here). Gah, that one kills me and yet I use it all the time. But yeah, like you said... dictionary, spell check, viola!