The way to submit an original article headline with an HN submission is to select, copy, and paste directly from the article. That cuts down a lot on spelling errors in article titles. (In empathy with other people, I recall a time when my select, copy, and paste missed the first letter of the headline, and I didn't catch that during the time it was possible to edit the submission. That made the title look really stupid, and a comment called that out.)
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[ 4.2 ms ] story [ 32.5 ms ] threada) You can edit the title up to 2 hours after submission. It's not too late - you can do it anytime in the next 80 minutes.
b) Mistakes like that don't happen if you use the submission bookmarklet: http://ycombinator.com/bookmarklet.html
https://news.ycombinator.com/item?id=7011368