How many pages before you get bored [graphic novel on the Web]?

If you were a fan of graphic novels if you found on on the Web how many pages could you sit through reading it before you got bored, ie, 3, 5, 8? And how fequently would you want to see new episodes or chapters? And what would be too quick of a turn around for you to keep up and what would be too slow that you’d lose interest because it seem stagnant?