Originally Posted by weatherman
Oh, you're talking about sending via wifi or something? Or downloading a mobi directly via the browser?
It works fine via USB so I think it's clear that Amazon didn't have an nefarious intent, but I agree it should appear automatically in books regardless of how you get it in to the folder.
If you sideload with Dropbox, WiFi or LAN. Basically anything but USB the mobi files just sits there till you restart the Fire. This needs to fixed. Like a refresh button added.