It must have been overlooked.
If it is true that this is what they are doing, then Dropbox has literally discovered one of the most profitable business models ever!
Another plus to their setup is the hash for the file is calculated on your machine, so you pay them so you can calculate the hash on your own files and only upload them if they haven't seen them before.
Google has supposedly implemented something like that for Gmail Attachments, but Dropbox seems to have the complete package.
This is just me putting 2 and 2 together.
If they aren't, they should be :)
What does that sort of entitled whining have to do with the storage methodology?
Also, neither Dropbox nor Gmail have ever charged me a cent.
1) Copy file into Dropbox on Server1
2) Client1 & Client2 on the same LAN will start downloading the file from the Dropbox servers at the same time; wasting their bandwidth and mine.
I wish the LAN sync feature would be expanded for downloads.
Wasting money on bandwidth by doing multiple transfers is minimal in comparison.