Since you've been nagging us with this, here's the deal. I'm against this and so are most of the people. If you want to ignore them, just /ignore.
Tell me, why would you wanna ignore everybody anyways? SA-MP is a MULTIPLAYER game and ignoring everybody makes it almost equivalent of singleplayer, with a few commands and tools. So no, this is not gonna be implemented.
@Zupps Ignore does not apply to admins in any case.
What has been implemented for the next update is '/toginfo' instead, which hides all player created [INFO] messages except yours to ease up with chat spam. Minigame messages are not affected by this.