Remember, a search spider cannot tell whether a site has a language filter or not unless it sees swear words, and it's not like we get thee in every other post anyway. I think it's much more likely this site would be added to blacklists because someone would notice people spending a lot of time here.

Since you categorically state that we stand the risk of beng blacklisted, it'd be nice to see some data to back this claim up. Installing a few different parental control suites and trying to access the site should be enough.