I like it. I wouldn't use it, but I still think it's good. It does remind me of the Rosetta Stone, which is cool in regards to the actual Rosetta Stone but not cool in regards to the language programs. Rosette avoids this.
Don't think I'd be into Rosette for some reason... Feels a little sharp. My best friend has a Rosetta (adopted w/ that name already), so I wouldn't be inclined to use it myself, but it doesn't tend to get any attention here, so I thought I'd throw it out there.