Urge away. If these people are incapable of heeding two written warnings and persist to a third, tough! Freedom of speech? Where?
These two were given 24 hours rest, in order that they might find the 5 vowels in the English language that will make their pearls of wisdom even shinier to the rest of the readership.
If you want to use text speak, then text each other. If you want to send private messages then use that function. If you want to post in a thread that the world can read and participate in, then use a language appropriate to the forum. Everyone else seems to have little trouble in this regard.