Yes, doing a couple headshots here and there is OK if your like 13 away from Fall or Red Tiger.
Maybe boosting like a care package kill...

But Riot shield boosting for 7 hours a day? So you can be tenth prestige? Its worthlesss to be a tenth prestige if its boosted and your accuracy is 8%

And people who boost for almost everything they have.
Like I see a level 44 with red tiger or fall on his m16. What the hell is that.

And NUKE boosting. The worst thing ever. The joe schmoe that thought up tactical insertion was HIGH as FUDGE when he said "lets make a tactical insertion"!!
Its the most pathetic, verminous cretinic thing in MW2. That and sniping and m16er and hitmarkering and then him 1bursting yu


So a little innocent boosting here and there is ok.
Boosting of any sort is horrible.
BBOSTIN' FO LIFE MUTHA F*CKA.