Congratulations on the mashable write up. Seems like a cool app. What wasn't clear to me is if there is some sort of email based alert system to proactively let me know if I was not getting my moneys worth (i.e. an email reminder that I should watch one of my outstanding movies tonight becase tomorrow I cross into the the above average cot per movie bucket). I may have just missed that, but if it doesn't exist it s definitely a feature that would make this type of service a lot more useful for me.

One note about building a business on top of the online DVD category- Netflix is the whole ball of wax. Blockbuster is a very distant second and the rest are all tied for last. This means that you will have limited opportunities to monetize your audience by offering up cost saving alternatives the way sites like mint.com and billshrink.com do in other categories (credit cards, mobile plans, etc).

All that being said- nice work!