Anyhoo the main points were:
- It gives you a shedload of credit. [I've got over 60,000 already today from a single card. ]
It seems to run best on 64 bit systems.
You shouldn't use the latest drivers - go for 9.1 or older.
It's tempermental and doesn't easily coexist wth other projects so don't team your new HD4850 with your best CPU.