starting from lvl 17, i leveled my PLD by almost exclusively doing dungeons, and this is what I've learned.

Up until sunken temple, most dps will ignore marks because either (a) they don't know any better, or (b) they are just bored due to the fact that dungeons are easy. This was also around the time that I just made a macro that says "please follow mark." and I really havn't had problem since.