It’s in closed beta, and has yet to launch, but if executed properly – I can sense potential in such project. Polylinguo wants to help those programmers, who are already experienced with at least one other programming language, and want to begin learning a new one – but are unsure where to begin.
In the tiny examples shown on the website, it can be assumed that the way it works will heavily depend on comparing code from one language to another, and then having educational tips and tricks explaining, why and how the syntax differentiates from each language. Which is probably one of the best ways to learn a new language anyway.
I’m sure more info will soon follow.