People accuse others entirely too much of ad hominem in forums, often as an excuse to ignore numerous valid points prior to the ad hominem statement. Those who constantly cite ad hominem only lessen their own argument.
Well, it can also be said that it would be in the benefit of a genuine participant to avoid making ad hominems in the first place so that we do not get distracted from the real points and argument at hand. In the end, the whole conversation at hand is lessened.
This is not a game of who has the higher ground. This is trying to achieve a better politics forum overall.