125) As Barrens chat was in World of Warcraft...never read /sayglobal, your brain cells will thank you.
126: Remember to turn off voice chat ahead of time, it helps prevent the dreaded Noise-marines having a chance to infect your ears with their music.
On Vehicles in general: 130 - Unless you like unexpected company NEVER stand on a vehicle pad with friendlies around, you may get a friendly rhino or even predator dropped in on your head. 131 - Beware of newbie Chaos/marine drivers, you never know which direction their Rhino is going go. 132 - Be carefull helping a friendly vehicle, you never know when its gunner decide to go all "rock'n'roll" and let the emperor sort the out who's who among the remains.