How can you make such a large generalization when you just "walked away up $80"? Sounds like you've only played poker once or twice, $80 isn't really anything in the long run. I don't play online often but I cash in about 70% of tournaments I enter in at casinos, your statement just leads me to believe you lost a bunch of money and you're looking for something to blame it on. The best way to avoid being cheated is to not play online poker.
Actually I shouldn't have brought numbers into it. I only said that so people _wouldn't_ assume what you went ahead and assumed anyway.
But I agree with your last sentence 100%.