I suck at parrying (people always call it manual block, but that sounds dumb).
I've practiced for hours in Native, duel server, etc, but I obviously just lack the required motor skills to parry in the heat of battle. Most people with my impairment just go Huscarl Shield/Side Sword, and do fine. I think 1h/shield is boring, so I loaded up on power strike and loomed a Great Long Bardiche instead (with the reasoning that with enough damage and reach, I could mask my horrible reflexes). I play almost exclusively on the NA Seige server, because the chaos of siege lends itself more to my playstyle (since I lose to peasants with practice longswords in any kind of duel situation). I may not be able to parry, but I have fun cleaving people and whatnot.
Sometimes the stars align and and I end up with a lot of kills during a particular map. Usually on defense, when I'm able to stand on top of a ladder and just split skulls nonstop. When I actually have a decent score, I never brag/gloat in chat, I just play the game and have fun like always. When this happens, invariably some guy (that prides themselves on their parrying ability, apparently) starts fuming in chat about what a joke I am, how I make them sick, making fun of my awful parrying skill, etc.
If you are one of these people: please stop. I don't claim to be good at parrying. No where in the server rules does it say you have to be able to parry 75%+ of attacks to play on the server. If I get more kills than you some round, it doesn't mean I think I am more 'l33t' than you or whatever. So please chill with the elitism, and understand that not everyone can be as awesome at every aspect of the game as you are. I follow the rules, usually focus on the map objectives, and generally keep a low profile, so please just leave me alone and try not to let my poor parrying skill ruin your day.
Thanks