As Malt says, sometimes you are damned if you do, and damned if you don't.
What I find offensive, others may just see as free speech, or expression of an opinion. For minor stuff (like the dreaded txt talk) I tend to drop the offender a PM. Sometimes people make a genuine mistake and as long as it's not going to result in an early morning call from the boys in blue I like to give people the chance to edit their own stuff accordingly.
On the other hand, some members are just plain stupid, and can't take a hint.................