As much as I don’t want to rely on copy/pasting content from AJ, wow.com, etc, this one tip is too good to miss out on. Vakerik (Nightfall-US) suggests the following;

For example. I always come out of the door unstealthed and then stealth immediately when names pop up on Gladius. That way, when I open on someone, I don’t show up on their Gladius making it obvious that I’ve opened – they have to call it to their teammates or see it instead. The difference is surely minimal, but it can only help, especially because we often play the same teams many times in a row so giving my identity away isn’t a problem.

A great tip really, and if you’re playing with a none-stealthing class it will be pretty obvious to your opponents (as soon as they check your partners buffs) that you’re a rogue. It might be worth-while stealthing as soon as possible once the names have appeared, it would suck to get a hunter’s mark on you as soon as you go out through the doors.

Original thread here.