Two questions.
1) Can you talk about password security? I use Fetch as my FTP client and I happily store them in presets on the understanding that these are local data on my Mac only and not saved by the application in any external location. Obviously that matters as for most agencies the information is the same as that which could be used to divert funds from our accounts. I'm sure you do the right thing, but the video doesn't address this issue and I think it needs to.
2) What about agencies like PhotoDune where you need to upload model/property releases into a folder - sub folder - at the same time as you upload the images and before you process them? There doesn't appear to be anything automated to do this, so would you have to have two separate presets in Go Stock, one for the releases with a different folder and the other for the images? I've never tried doing this in two separate FTP sessions, but it could be OK from the site's point of view as long as you upload both pieces prior to processing
Given my workflow, I'm not sure how I'd incorporate this. It might be easier to do if I could save the log file (and it'd be nice to have a button versus having to cut and paste it into a text editor). Is that possible?