If you have quality content, you can get away with being a bit more laissez-faire with the timings, but that's usually after you've already built a fanbase that has got used to having consistently updated and good quality works - people who already have the eyeballs as it were. For the rest of us, it's just about playing around during peak traffic times.
Honestly, daily updates work very well for novels as well (but I appreciate that would cause carpal tunnel syndrome for most artists!)