> "I wasn't even sure whether it was Linux or BSD based or something else until halfway down the front page, and had to check the Developers section to find out it's based on Ubuntu."
Really? Are those really worth complaining about? If anything, successful OSes (based on user base) have taught us that marketing should focus on user-centric features first, technical ones second.
Because it has a more explicit interface (vs. Dropbox's "implicit" interface.)
That is, for what I can see with Receivd the user explicitly "opens" an app (as they're used to doing for almost anything else on their computer), which in turn clearly states "drag and drop files here to share."
With Dropbox the user needs to understand the concept of a shared folder that "magically" syncs with other computers. For many users this is an alien concept and may confuse them. I know of many people who have a Dropbox account, yet use the service exclusively through the web interface, simply because typing a URL, logging in, browsing for a file, clicking and downloading it is a concept they "get."
There's no such thing as "one size fits all" in this world---specially when it comes to user interface design.
Edit: I should clarify I do not work for Receivd, nor have any connection with the team, so I don't speak for them. This is just my assessment as a UI designer.