Mt. Gox - what order do buy/sell transactions get processed?

[ChupacabraHunter]

In what order buy transactions are processed?

Like, if I have a buy order at $30, and so do you... who gets it, if there is only 1 sell at $30.

or

If I have a buy order at $30 for 100 BTC, and you have a buy order at $30 for 50 BTC and someone wants to sell 25 BTC at $30, who gets it?

[DamienBlack]

I can't verify that mt gox does this, but the standard practice is to fill the one put in first. Mt gox allows very small USD price differences, so you can always get ahead by putting in an ask of 29.99999 instead of 30.