I think it all depends on your level of need.
I mean, Cass and Jilli and Lee can all speak to the EPIC depths to which I plunged for my Dark Angel hits.
Also, they remember that time I was sick and ran out of all the SPN hookerfic tagged on the then-useful Delicious.
By the end of that, it was pretty bad, and actually went further down by the next tag I explored.
There were a lot of prior instances where the author didn't seem to understand the use of apostrophes, so not a good impression already, but that word swap was the last straw.
There is at least one fic that I enjoyed so much that I copied it to my hard drive and edited it into readabilty. I was tempted to send my copy to the author but resisted.
Aloud instead of allowed? Oy. Just hit that one.
Though, I'm a bit more tolerant of those types of mistakes over the author notes with "Wow, I hope you really like this. Comments pleeeeeaaaasssssssssseeeeeee",
"This is my first fic EVAH! Please tell me you like it!!!"
Sigh.
I sometimes inadvertently do the homophone thing myself, so I can't really object if one or two slip by in someone else's writing. I do try to catch them in editing, though.
I'm getting puzzled at the prevalence of "wondering" instead of "wandering." It's like the authors have only ever heard the words and are trusting their spellcheckers too much. Though wondering could work I guess.
When I see "I suck at tags" my first thought is "thanks for warning people up front that you have difficulty putting your thoughts down in word form."
Tumblr-style tags on fic are a huge red flag for me. What is a tag of 'what is this I don't even' supposed to tell me about your fic, exactly?