So where is MtGox getting the "last price" on their homepage from? A RNG?

[DeathAndTaxes]

At the time of writing the website shows $13.57 as the last price.  Not only was that not the last trade there hasn't been a trade north of $13.50 in the last 30 minutes. 

So does it just randomly pick a number?

[Kupsi]

It's a "last price" from one of the other markets converted to USD.

[Evolvex]

I've been wondering that myself lately, thanks for clearing it up - I thought it was bullsh*t as well.

[Endgame]

the whole multi-currency trading engine they use is pretty confusing tbh. I'm still trying to get my head around it.