And this is why I put that last sentence in :) Thanks guys, I definitely see your point now, and I figured that blasters used it mostly as a 'back off!' but I wanted to get some more educated opinions in on the topic.
As a melee dude, it's a royal pain for me because I WANT the 'enemy is flat on their ass and has to get up again' mechanic, but not the "ah crap, they're on their ass then stumbling around all the way over there and I can't reach them because I have fifty other dopes nibbling my ankles and I can't push past them" mechanic which happens a lot with knockback, as previously mentioned. When it happens randomly it makes it annoying.
As for players doing it deliberately, that's another kettle of fish and we won't discuss it here.
There's also the question if this is even possible, which may not be the case.