I don't think people get ran out of here because they have differing opinions at all.
I think it is all about how you make the point you are trying to make. I am glad to have ISUSID on this board, because he is a good source for accurate information. He very rarely gives an opinion here at all unless someone chaps his nuts.
Personally, I go on the attack when someone bashes a student athlete by name. Baseless promotions by friends and family for playing time by ripping another player get at me as well--as do people that bitch and moan without offering up any type of solution. I also, don't do well with the poster that lies dormant for months and months--only appearing to spew negativity. I think to some extent, others are offended by some of these practices as well.
Frankly, I have done my share of attacking as of late and quite a bit of it is done out of frustration. I also, look back and say--man that was kind of stupid to go on and on about, but at least I can admit it. But, it has everything to do with being a proud Bengal fan of 30+ years...it comes naturally for me to defend the University that I love, because I have had to my whole life.
As a wise friend of mine once wrote--Being a Bengal fan isn't always easy, but its always fun.