Some useful advice from the blog Life as a Healthcare CIO:"Every time I have responded to angry email with emotion I have regretted it. Although it may feel good to respond to a negative email with a venomous answer, emotion is never appropriate. I tell my staff that if they ever feel emotion while writing an email, "save as draft". Get someone else to review the response first. Send it after a day of rest.
Thus, keep a stiff upper lip, have a thick skin, and run each day based on your trajectory not the position of your ego. "
The same advice applies to writing blog posts and commenting.
References:
Always Look on the Bright Side. Life as a Healthcare CIO.
Image source: Openclipart.org, public domain.