Definition - An ad hominem argument is one that is used to counter another argument; but, it is based on feelings or prejudice, rather than facts, reason or logic. It is often a personal attack on one's character rather than an attempt to address the issue at hand.

You asked for an example of when you have made such an attack DtG

How about your post of:

Dave the Gnome - PM
Date: 30 Oct 15 - 02:46 PM

Yes, Keith. Whatever. Like I said, whether you take any notice of my opinion is not my problem.

Teribus, if I really wanted to be abusive I would just tell you to fuck off[You mean as Raggytash has already done on this Thread in a response to Keith A?]. As it is, I will just utilise a favourite tactic and ask for any supporting evidence of where I have insisted anything like you suggest. I have always made it quite clear that my opinions are just that. Keith is pompous. You are a twat. Mere opinion only and nothing I would ever insist is true. No shame in proffering honest opinion."

You may offer your opinion, but if that opinion includes accusations then you have to substantiate the grounds for making them. Do you really state opinions that you know to be untrue? - ("Mere opinion only and nothing I would ever insist is true." - Your words" - That would make you out to be the Twat Gnome.