User blog comment:Lancer1289/Are People in Multiplayer Lacking in Intelligence?/@comment-1679409-20120730195614/@comment-1978336-20120730200122

Boosting. They want to mooch points off of others and rank up with minimal effort. In Halo: Reach players who boost get banned from earning credits, but in ME3 there appears to be nothing to discourage players from boosting.