User blog comment:AXE MURDERER/Yasuo is disgusting/@comment-24315274-20131226174037/@comment-8468980-20131226175934

Riven snowballs because her base damage is insane, she force multiplies early game AD items like crazy, and she's got free dashes for days.

Yasuo *doesn't* snowball. He's not going to burst you down with dazzling base damage and his early game damage from items isn't particularly noteworthy. Yasuo's primary goal in lane is to farm as safely as possible, if you can make plays to get kills or bully opponents out of lane, then ok whatever but do not sacrifice CS for this since his kit doesn't excel at these goals.

I cannot speak to his effectiveness, I've seen Yasuo players do well and poorly.