I spent $350 on an lcd a year and a half ago, 25ms 15". I have only experienced streaking in ONE game, nhl 2003.
If you dont own an lcd, dont put them down. I can tell you dont, as no lcd owner would call it "ghosting".
edit: for the people who want to get technical, yes, the effect is "ghosting" but it looks nothing like the ghosting on a tv. its much more of a stretching and streaking of super fast moving objects (such as the puck in NHL games with speed set up high).