There is a good article at the Motley Fool about this company. The biggest concern for me is there churn rate. It is way too high. They are not retaining their customers and that is a bad sign. He is the link to the article. Main point of the article is right here.
"On an average month, Netflix will lose 8% of its subscribers. Multiply that by 12 and the annual turnover under hypothetically constant numbers is a staggering 63%. So, how good is this service if most members are giving Netflix the heave-ho within their first year. Could Blockbuster survive with that kind of defection rate?"
I find Netflix service to be great. What I really like is - things happen and often we don't end up watching a movie on a night we planned to. With Netflix, there is never a worry.
Again we almost always have one or two on hand we haven't seen and one coming in the mail.
If you watch DVD's and don't like driving to find one, driving to return one - then this truly is a service worht paying for - and so far it has been far less than typical store rentals not counting the gas or late charges they charge.