What do you plan to do with the site going forward? It’s a catchy domain name and the execution is pretty simple and straightforward. Maybe you could add a blog for words and substitutions you’ve used, and have a little callout on those words’ pages saying they were featured on blogpost #n: [post title] or something. If you wanted to make an app you probably could add some kind of social features and allow people to make word pairs and vote on them, make some kind of front page showing popular new pairs and even popular word pairs in different languages for language learners? Just throwing some ideas out there.