I have hosted many 6 player ilink days and can say they are awesome! Especially if you have a good bunch of people with similar experience. Only bad things to report are;
1. Everyone lugging TV, ps2, wheel, headphones, powerboard, ect...
2. Can't be bothered to play single player ever again.
3. Only arcade cars available w/o tuning.
4. Pits are too small on most tracks (cars get caught on one another).
If PD dont fix 3 & 4 in GT4 I will be seriously pissed. The pit problem really spoils close races.
JA