What bothered me with Hulu was the combination of frequency and repetitiveness. The same ad every 8-10 minutes in an hour long show is just dumb, and an advertiser should recognize that and refuse to pay for it.
That turns me off extra-quick. Either show ads less often(my preference), make more ads(like how Coke and such will do a number of 'theme' ads), or get more sponsors for any given show - and rotate through them.
The one time I tried Hulu the monoculture ads, shown even more frequently than broadcast TV, at an even larger volume boost(Seriously, I had to rip my headphones off), with lower production values(IE more stupidly annoying), pissed me off.
Though maybe it's them not realizing that people are watching on their computer, and not as accepting of 'generic' ads.
They're supposed to have an ads-free option. I'm more interested in a free-free option. Of all the many things that make me murdery, ads just aren't among them. They don't bother me.
You're lucky, they make me murdery. Relatively few things do.