my grammar sucks?

I was told by my brother that my grammar sucks. I think he may be basing this off something I said to him at myspace. He posted back on my comment page saying that my grammer sucks. Could you please read what I wrote to him and tell me if it indeed sucks and correct it for me. It would help a lot. I'm mainly concerned on how my sentences are formed, not as worried about me typing ".." instead of ",", if I write "there" when I should of written "their" or if I forget to put a question mark instead of a period. I would think my grammar is not that good or decent but definitely not sucking. That's IMO like saying you suck at basket ball because you don't make that many shots, I think sucking would be missing the whoop or backboard entirely but not when most of the time you are pretty accurate at where you throw the ball.. you tell me. If this sucks, is decent, or just slightly bad. If it's really bad then you can describe that it sucks, if it is just slightly bad please don't state that it sucks because that is not the definition of "sucks".. or something.. lol

Please ignore the content. If you disagree with what I'm saying I don't think that would matter this is an english forum not a debate on political beliefs forum. I'd appreciate the help a lot. Thanks..

anyway here is what I wrote..

"Yes he obviously hates our president.. actually well.. everyone hates our president.. well the majority that is in terms of poll studies and especially in other nations. High rating cable news broadcasts usually get there high ratings due to the fear provoking they do. It is what sells. Fox news especially does this, it is the king of scare tactics.

MSNBC has one of the most honest news caster that I've seen.. one of them being Keith Olbermann. Countdown talks more than bush that's just the tip of the iceberg.. mainly it seems he attacks bush his administration and o'reilly.. maybe he is sorta biased in limiting his fights though he's an elite at picking out the deceptions from these people. Witch always makes his show entertaining.

Tony: Bush won't ever tell you what you can and can't think. He just said this accidentally when he meant to say "I think it's wrong to believe..."

I'd like to back up that statement with these.




and of course
but this is what you are countering by attacking MSNBCs ratings right.

Are you kidding me.. this is the guy who never admits to a mistake. He says stupid things but it goes beyond that, he backs up every word that he says."

and

" I just ran into this video and I find it to be pretty funny.


Thanks for any help. It is very appreciated.