I didn't intend this thread to be about the virtues and pitfalls of various online streaming methods, but your post reminded me of how much I hate commercials and how much value I think I've gotten out of avoiding them.
Like most of us I grew up watching broadcast tv and experienced commercials as a fundamental aspect of TV Viewing. It wasn't until I started watching Paid Services (HBO first) that I began to realize how deeply the commercials were degrading the experience of the shows I was watching. For average shows which don't really require your attention or aren't that interesting commercials have little detrimental affect. But I quickly found that if a show was really good and well written and capable of holding your attention, that the interruption of commercials completely destroyed the intensity of the show.
Now that I have tried things both ways I will never go back to watching any quality programming with commercials in it. For me this means that I routinely purchase episodes or shows from various sources (iTunes and Amazon primarily) if I consider the show worthwhile. And after is all said and done (paid and calculated) I find that I've actually spent far less than I used to spend when I filled my cable bill with HBO and STARZ and all the other options which they have carefully crafted to give you only pieces of what you actually want.
NetFlix has also proven to be a bonanza. For $10/month and unlimited streaming of whatever shows they happen to run all I have to do is be content to wait for the older shows that I missed the first time or to wait for seasons to pass through their "first round purchasing" phase.
Mostly I just wanted to say how odious I now find commercials, not just for their inherent exploitation of the facts for their own ends (the very nature of ads), but also for the damage they do to Video Storytelling which so much of the population hasn't even become aware of yet.
(end of rant, you may now return to your regularly scheduled program)