Graal is the very French word for grail.
Swear filters are not good.
Few swearing is almost okay. It does not hurt anybody here, and it perhaps helps expressing anger.
If swearing is abused to harass others, or used over a certain extent of acception, this community itself can "punish" the offender by ignoring him, or valueing him less.
Someone who swears a lot just is working against him/herself, as he/she will lose respect in this community, which is far more punishing than a few asterisks.
Also I think that it is generally not a good idea to use automatical devices to make people follow the rules, in an online community. If rules cannot defend themselves, they are perhaps not worth to be held, and thus shall be made more appropriate. Also, this swear filters makes people think it is okay to swear, as it gets blocked out anyways. I think it is much better to have a moderator personally message the offender and warn them
[edit]someone ate the ****ing line breaks[/edit]