Absolutely MT Gox are scammers:

They scammed me for 7 BTC in the commission they charge.  I sold BTC for USD on MtGox in May believing the statement on their web site at the time that  they could deliver the USD to my bank account in 'up to two weeks' .  After 3 months they still never paid me the USD. This is called defaulting on a trade.  All I got was excuses from the support desk.    Eventually I gave up and bought back the BTC on Mt Gox (they got comission again!) and transfer the BTC to another exchange that doesn't default on trades.  The round trip of selling the BTC and then buying it back again cost me approx 7 BTC in  commission (the trades were approx 700 BTC each direction).   Those 7 BTC are now worth $8,400.     They ripped me off for 7 BTC by telling lies about their ability to  deliver the USD I bought from them.  I had no money or BTC with them now.

The reason they don't tell you about their problems is they don't want to jeopardize the money they are making from suckers like me.  I despise Mt Gox. They are cheats and liars.     Try coinbase if you are in the US. 

I've done about 10 transactions totaling about 250 BTC over the last couple of weeks.  No problems at all. 

thank you

Agreed. I would go even further.  When people submited orders to buy USD / sell BTC they should have given a big warning that they cant actually deliver the USD to you.    The absence of this warning caused me to buy back the USD 9 weeks later (once I realized they weren't going to honor the trades) .  Their press releases misled me into believing they have solved their withdrawal problems after the 'brief hiatus' .  Had they been honest, I would never have done the original trade.  They owe me at least the commission and spread on the trades.

Then your argument @ #9  is easily defeated because it is based on a straw man fallacy.  http://www.logicalfallacies.info/ambiguity/straw-man/.  - I near made the case you are arguing against.

#11 is similarly unconvincing because it commits the false dilemma fallacy.  It's not a choice of blaming one or the other.   http://www.logicalfallacies.info/presumption/false-dilemma/

I suggest that if you want to persuade people of your point of view, you avoid such logical fallacies.   

simplicity or lack thereof is not an issue I raised. perhaps you have mixed up this thread with another one. 

Because I have a USD bank account.  I dont have a non-USD account to settle to.   If i wanted another currency I wouldn't have sold the BTC for USD   I would have sold it for a different currency.

I got suckered d by Mt Gox even though I have a forex trading and banking background.   I sold BTC / bought USD on MtGox believing they would settle the trade and deliver USD.   I since learned they they can't honor the trade and deliver USD to me.  WHat the F&^k is the point of executing the trade if they can't settle it and deliver USD?    I had to cancel my USD wire transfer after 9 weeks of waiting and move the BTC to a different exchange.    I paid approx 0.5% comission to Mt Gox for each trade and got nothing for it.   I also lost money on the spread.

I think it's fraudulent for MtGox to offer BTC/USD trades knowing they can't settle the trade and deliver USD.    Having the USD in an account at MtGox is not satisfactory because it still means I'm exposed to settlement risk / default risk months after the trade was completed. 

Mt Gox should cease USD/BTC trading until they can actually settle the trades.   Of course they are making too much money from suckers like me to let people know they can't settle USD trades.  They should be honest about their ability to settle trades and stop feeding people this '2 week delay' BS.