Tell HN: In Skype chat, using s/rong/right/ will amend misspelled messages.

I love this attention to detail. In some versions of the Skype client (e.g. it works on my Mac version 2.8.0.851, but not a friends Windows client), when you've sent a misspelt word, you can use the old ed command s/rong/right/ to fix it, and it will amend your previous message, even after it's sent. It only seems to work for the most recent chat message sent though.