Rather than memorize a bunch of flash cards it seems much easier to just talk to them like humans and if they say something you don't understand don't be embarrassed to ask them what it means.
I know non-technical people who, when they think they are hearing anything remotely technical, seem to shut down and go into "I don't know technical stuff!" mode... Not that flashcards are going to cure _that_.
I don't think this is a bad idea per se, but I do think that it's got a long way to go before it's really useful (or even correct).