Something I learned a long time ago, back in the usenet days. I draft my posts in notepad, read carefully and, most often, delete without posting. But ALWAYS think, THINK before hitting that SEND button.
Another Usenetter, eh? It reminds me of the days of my Everex 300 bps dialup modem to a POP to connect to the Internet, long before the term "www" became part of the vocabulary.
The only difference is that I used (and still use) vi instead of notepad to prepare my posts, many of which never got beyond the /tmp directory and quite properly ended up in /dev/null. :-)