Re: What is edgy language?
Another forum I frequent and moderate at uses PG-13 as its language standard. That site has a short list of profanities in its banned-word filter. (If you've watched enough PG-13 and above movies, you can probably guess which words you'd never hear in a PG-13.) As a moderator there, my rule of thumb for language is to allow anything that isn't on the banned-word list, as long as it's not a veiled profanity meant to circumvent the banned-word list.
Honestly, it'd be easier to moderate with a tighter standard than PG-13, like RedsZone has. Too many "edgy" words at the other place tend to be aimed at other members. That makes the other place less friendly at times.