[tenken]

He's saying be sure the generator doesn't sound like a bad name in any language.

I'd say make a dictionary of bad words and their syllble sounds. Then disallow close Levienstein based words....

[alixaxel]

Levenstein is an absolute metric, I think something like soreson-dice would be more useful.

Regardless, if you take the short keywords and blacklist them by approximation with curse words from several languages I think it would be really hard to get something at all.