What would be really useful is a Log or History of which players you have already won Badges from in the last 12 hours (or even just a list of the last X badges you won and who from) - so that you don't accidently hit a player for no badge because you didn't remember that they are someone you already hit 10 hours ago.

I am just talking about a plain-text Log/History - no links or anything - just a plain-text list that you can check against before you attack soemone.

It would also be very beneficial for weaker players who don't PvP - because it means that they won't get hit multiple times by the same player (most of the time).

You could have it as a table with 4 columns (Name, Red Badge, Blue Badge, Yellow Badge) or just a simple text log that gets update with a name and badge colour each time you win one.

i like it, there is a need form some form of marking scheme to avoid accidently multi-hacking/attacking...

+1 i agree, today i accidentally hacked two people twice. had to apologise.