We're working on making a Logo-based game engine; we're also going to release a command-line version for scripting soon. Actual Logo is a fully-complete language with sophisticated string and list handling. So we're hoping to make Logo more useful than just for education! =)

Just education and toys. The simplest ones like this aren't even Turing-complete, so you couldn't really program much in them even if you wanted to as a weird challenge - they're more like automated Etch-a-Sketches.

They do make for good languages for toy robots, though - for instance, you can use Scratch with Lego Mindstorms in a way that's not much more advanced than Logo.