But for many buyers, all of this online review of information and imagery still does not come close to the experience of being inside the home. 

So -- as a buyer... it's fine to absorb yourself in the online information available for a particular home... but don't hesitate to set up a time to physically view the home if it is of interest.  With regularity, actually getting inside a home very quickly intensifies a buyer's interest in the property, or helps the buyer see that it will not work for them. And even more specifically, don't feel like you are wasting your Realtor's time if you want to go look inside homes that only "might" work for you -- you oftentimes aren't going to really know if they will work for you until you are physically inside the property.