What does 2 Samuel 18:22 mean?

Then said Ahimaaz the son of Zadok yet again to Joab, But come what may, let me, I pray thee, also run after the Cushite. And Joab said, Wherefore wilt thou run, my son, seeing that thou wilt have no reward for the tidings?

Then said Ahimaaz the son of Zadok yet again to Joab, But howsoever, let me, I pray thee, also run after Cushi. And Joab said, Wherefore wilt thou run, my son, seeing that thou hast no tidings ready?

Then said Ahimaaz the son of Zadok yet again to Joab, But come what may, let me, I pray thee, also run after the Cushite. And Joab said, Wherefore wilt thou run, my son, seeing that thou wilt have no reward for the tidings?

Then Ahimaaz, the son of Zadok, said to Joab again, Whatever may come of it, let me go after the Cushite. And Joab said, Why have you a desire to go, my son, seeing that you will get no reward for your news?

And Ahimaaz son of Zadok addeth again, and saith unto Joab, `And whatever it be, let me run, I pray thee, I also, after the Cushite.' And Joab saith, `Why <FI>is<Fi> this--thou art running, my son, and for thee there are no tidings found?' --

Then Achimaas the son of Sadoc said to Joab again: Why might not I also run after Chusai? And Joab said to him: Why wilt thou run, my son? thou wilt not be the bearer of good tidings.

And Ahimaaz the son of Zadok said yet again to Joab, Come what may, let me, I pray thee, also run after the Cushite. And Joab said, Why wilt thou run, my son, seeing that there is no news suited [to thee]?