check out this poll from LJ's architect of limits, Brad:
at press time, the answers to the question
Is 50 posts/day for non-free users reasonable?
is 273 No votes (7.7%)
Do you understand the need for limits, in some form?
is 118 No votes (3.3%)
Now, unless the people in question 1 are concerned about posts to communities (which would be severely impacted if limited to 50 posts a day, true)- what the hell is wrong with you people? If you can post 50 times in 24 hours, you either need a job, some sleep, or to get the hell away from Quizilla.
As for Question 2- What part of "things cost money, and someone has to pay the bill" don't you 118 people get? You must be the morons whose sub-literate LJs I always get when I hit the random button. Sigh.