It seems a bit bizarre to implement a system to send audio and video for comments. Youtube already do video replies which are not exactly setting the world alight, surely just a comment box will suffice?
If we were to consider any coffee shop chain - the complexity in some of the coffee that is displayed is extremely apparent.
We can go from £1.50 for an espresso all the way up to £3.60 for something that may resemble a coffee but probably only costs a few pence more to produce!