Why a broker bankrupt?

Hi,
Today I am making an EA. The equity chart is heading up and down. From 2005 to 2009, the result is positive. However the system make so many trades.

I am just thinking howmuch money my broker make if I run this system. Many many trades ... Every trade give them spread profit. 2 pips spread x 1000 trades = 2000 pips = $200 for mini. Well ... That's just from me.

So, if the surely make money from spread, how come we still still broker went broke or cheat their client?

May be the answer is still : GREED

Don t forget that beyond the spreads the trader's performance is to be taken into consideration!

Yes...greed kill them. Imagine you have a broker wich is a greedy bastard who spikes the prices to take up the customers stops.
You realyze this by looking the feed from the another broker.....
and say to your self....whow...look at this bastards, their prices deviate from the original feed prices by almost 10-50 pips when the spike occurs!
If you know what is triangular arbitrage, then you know that prices between 3 arb currencyes must be a*c=b.....if the difference in this formula is more than few pips you got a great opportunity to kick
that brokers ass.....and this type of greed is what kills them!!!
There is some other inefficiences between the brokers feeds that can
be profitable, so......we can kill them easily....remember that!

Regards