The work wasn't terrifically difficult, and when one needs guidance, it's only an e-mail away (usually). Research was slightly more troublesome due to the limitations of accessing AU's library materials. You can get most of the work done, but actually being at the library is more conducive to better research. Interactions were mostly limited, and it's more like a business than classroom environment. Given the option (and discounting time and money), I'd rather sit in the class. Personal interaction is preferable, but when time is limited, the online adventure sufficed.