Does anyone know of any downsides to enrolling? Like others, I'm doing school/work full time already but I'm letting my curiosity get the better of me (enrolled on Udacity only so far). Is it wrong to assume that if you pass, you pass, if not you can just try again when you have the time (and it's being offered of course)?
Edit: add MITx and some coursera courses as well... this semester's been gentle so far, why not liven it up?