This article addresses the "good enough" question mainly from a technology point of view, but the concept is equally applicable to the world of content. It's interesting how some technologies (e.g., CDs/MP3s of today) are superior to yesterday's (e.g., cassette tape/LP), while others (e.g., cell phones) are far less reliable than what they've replaced (e.g., the original land line). Of course, all the audiophiles out there will tell me how inferior the sound quality is on a CD vs. an LP; I can't tell the difference though, and neither can millions of other consumers. CDs were clearly more than "good enough."
Despite the dropped signals we'd all be lost without cell phones. Why? Because they deliver on the "good enough" promise. That, and they offer a slew of features and services you just can't get with that trusty land line.
How does this apply to the world of content? Right now, I'd argue that a large number of free answers available online and discoverable via Google are "good enough" for a lot of people who used to rely on books and magazines, for example. Even though you sometimes have to look for that needle in the haystack, free is hard to compete with and the expectations bar is set pretty low.
The expectations go up dramatically when the price goes from free to something just above free, however. Should that discourage content providers from experimenting with new, paid online content models? Absolutely not, but you've got to pay close attention to all your competitors, including the 100% free ones which we often like to ignore.
As the article notes, "imperfect technology greases innovation." Much to the chagrin of engineers around the world, oftentimes the only way to determine whether a new model is viable is to actually try it out. In order to do so though, it's important to keep a lid on the initial investment costs; focus on testing the core feature set, not the complete feature set. Finally, as another old saying goes, "perfection is the enemy of excellence," so don't be afraid to experiment a bit even if there are still a couple of warts on the surface.