Yes, Bitcoin is perfect for arbitrage scamming, also beware of mining pools that keep hold of your coins.
I'm still waiting on half the coins I worked on Eligius pool in October.
Eligius pays out balances as soon as you reach a reasonable amount (currently about 0.67 BTC) or stop mining there for a week. I call FUD.
yeah, i did an hour or two of mining at eligius in august or september and got my payment a week later, wasnt an issue
figured the rest out myself